Anatomy of orbit ppt.
The document summarizes the anatomy of the orbit.
Anatomy of orbit ppt Lutfi ballqadi Assisstan. The lateral walls border the middle cranial, temporal, and pterygopalatine It's a presentation of Anatomy of Bony Orbit and its applied aspects. Key points: - The orbit is a quadrangular pyramid shaped cavity formed by 7 bones and measures approximately 50mm deep along the lateral wall. Blood supply of ooculomotor nerve. Anatomy of the orbit The orbit is a pear shaped cavity,the stalk of which is the optic canal. Primary Intraocular Lymphoma Powerpoint. DrParesh Varsat Seguir The dimensions of the orbit are variable; a guide of average essential measurements is summarized in Table 32. • Origin-body of sphenoid above and medial to optic canal. 2. All patients should follow-up with an ophthalmologist within one week of the fracture (Retinal examination, Intra-ocular pressure). Orbit • Frontal • Zygomayic • Maxillary • Ethmoidal • ANATOMY OF THE EYE & ORBIT - Free download as Powerpoint Presentation (. Development of orbit Develops from mesenchyme ossification by 6 th to 7 th week laying down of bones starting with maxilla bone around the They border the nasal cavity anteriorly and the ethmoidal air cells and the sphenoid sinus posteriorly. It describes the orbit as a pyramidal cavity formed by seven bones, including the frontal, zygomatic, maxillary, palatine, lacrimal, ethmoid, and sphenoid bones. 1-Anatomy of the Orbit : -The orbit is a pyramidal space that is formed by seven bones -The globe lies in the anterior orbit; the globe and its contents are contained by three layers : 1-The sclera and cornea form the fibrous outermost layer 2-The vascular uveal tract, including the ciliary body anteriorly and the choroid posteriorly, forms the middle layer 3-The retina In this article, the anatomy of the orbit is reviewed, with a specific emphasis on surgical anatomy. The orbitThe orbit is a pyramidal, bony cavity in the facial skeleton with its base anterior and its apex posterior • The orbits contain and protect the eyeballs and their muscles, nerves, and vessels, together with most of the lacrimal apparatus. "Orbit" can refer to the bony socket, or it can also be Eye and orbit revision ppt - Download as a PDF or view online for free A K Follow. Anatomy of the Skull • Download as PPT, PDF anatomy and physiology of the eye. Floor weakened – due to – Infraorbital canal The document discusses the anatomy of the orbit, including its embryology, dimensions, boundaries, and clinical significance. Nasal vestibule:- -dilation inside aperture of nostril -bounded laterally by alar, and lower nasal cartilage. The optic foramen provides passage for the optic nerve (CN II) and ophthalmic artery to exit the skull. Massoud, MD, PhDb, Mary Beth Cunnane, MDa INTRODUCTION Each orbit is a complex structure housing the globe, multiple cranial nerves, muscles, vascular structures, which support the visual sense. Roof: The bony orbit is a quadrangular pyramidal cavity housing the eyeball and other structures. Add text here Bones of the Orbital Wall. Forms the floor of the orbit. It discusses the bones that form the orbit, including the frontal, zygomatic, maxillary, lacrimal, sphenoid, palatine and ethmoid bones. bone. It discusses the contents of the orbit, including the eyeball, extraocular muscles, 16. OPTIC NERVE • It is a 2nd cranial nerve • Originate in the ganglion layer of the retina • Length varies -35-55mm from the globe to the chiasma • Consist of about one million axons-fibres within the retina are transparent • Its organization structure similar to white matter of the brain • Optic disc –optic nerve head seen with o’cope • Within the orbit -covered with Gross Anatomy Dimensions Depth – about 42 mm(40-45 mm) along the medial wall - about 50 mm along the lateral wall. The orbit is a conical structure surrounded by several bones including the ethmoid, frontal, lacrimal, maxillary, palatine, sphenoid and zygomatic bones. By the end of this lecture the students would be able to; “correlate the structural organization of the orbit with its functions and clinical significance”. Key structures mentioned include the medial wall formed by the frontal process of maxilla Eye & Orbit. The optic foramen provides The document provides details about the anatomy of the orbit and eyeball. Key points include: 1. Lat - with masticator space (or infratemporal fossa) via the pterygomaxillary fissure. Anatomy of orbit. This document provides an overview of the CT anatomy of the orbit. 1 ANATOMY OF THE ORBIT Dr Sheetal Savur 2 The orbit Protects, supports and maximizes the functions of the eyeball Shaped as a quadrilateral pyramid with its base in plane with the orbital rim 2) Each space has distinct boundaries and contents, and different types of tumors typically arise in the various spaces. At the most anterior portion of the orbit, the presence of the frontal process of the maxilla, forming most of the medial rim of the orbit, determines the presence of a gap, which is filled in by the upper portion of the lacrimal bone (Figures 2(e) and 2(f)). Fractured in blow out fractures. Orbital Volume • 7 LACRIMAL APPARATUS The orbital structures that produce tears and the ducts that drain the excess fluid from the front of the eyes into the nose. There are 6 of these extraocular muscles that control eye movement (cows only have 4 of these), and one muscle that controls eyelid elevation. It describes the anatomy of the orbital cavity including its dimensions, walls, openings, spaces, and relations to other structures. Zygomatic, frontal, palatine and alveolar process Landmarks: Infra Orbital foramen: hole below 3. 1 of 32. At the apex of the orbit, the optic foramen conveys the optic nerve backwards to the intracranial optic chiasm, and the ophthalmic artery forward into the orbit . The orbits are pyramidal structures separating the upper and middle facial skeletons. Scanning techniques for assessing the anterior chamber, posterior chamber, and 3. lesser wing of the sph. They are the frontal, maxillary, zygomatic, ethmoid, lacrimal and sphenoid bones . Ophthalmology orbital anatomy ppt. Extraocular muscles are also referred to as the extrinsic (arising externally) or muscles of the orbit. This expansion can be seen in orbital fracture along with mid facial fracture as in tripod or Le Fort type III. Orbital AnatomyOrbital Anatomy Bony orbit refers to the shell of bone whichBony orbit refers to the shell of bone which surrounds and protects the eye. It describes the bones that form the orbital walls, such as the frontal bone, maxilla, palatine Anatomy of Eyelid, Introduction to Orbit - Download as a PDF or view online for free RahulGupta39947 Follow. pdf), Text File (. Key points include that the orbit is formed by 7 bones and contains the eyeball, Objectives Describe the location of the orbit. Anatomy of eyeball - Download as a PDF or view online for free It also discusses the anatomy of the orbit, eyelids, conjunctiva, coats of the eyeball including the cornea, sclera, iris, ciliary body and choroid. Bounded by- • Superiorly- Anterior cranial fossa • Medially- Nasal cavity and ethmoidal air sinuses • Inferiorly- Maxillary sinus • Laterally- Middle cranial Orbit. The orbit is a complex structure with multiple contributing bones, important foramina, complex neurovascular and muscular anatomy, and a lacrimal apparatus, which all support the visual sense. Prepared by Second Year students at Faculty Anatomy of the eyelids - Download as a PDF or view online for free. Using ultrasound to examine the eye and identify normal anatomy and common pathologies. Many of these structures have been delineated in careful 57. The walls of the orbit are as follows:. They border the nasal cavity anteriorly and the ethmoidal air cells and the Computed tomography (CT) is the standard diagnostic test for evaluating cross-sectional, two – or three-dimensional images of the body (1). Retinal Pigment Epithelium: Sheet of melanin-containing epithelial cells lying between the choroid and the neural portion Which form a single layer extending from the Still not finished. It can be summarized as follows: The orbit is a pyramid-shaped space bounded by seven bones and containing the eye. The . 1). Clinical features, diagnosis, and treatment of orbital fractures including surgical approaches, reconstruction materials, and management. Eyelids – These cover the orbits anteriorly. Healthcare providers often debate whether CT or magnetic resonance imaging (MRI) of the orbit is more effective in identifying orbital pathology symptoms. A Presentation for the anatomy of the orbit, from its embryological development till till the clinically-related cases. The upper part of the lacrimal bone is therefore located between the anterior edge of 16. • The maxillary sinus and the palatine air cells are located inferiorly. eyelids iii. Dura mater: continuous into orbit on optic nerve and blends with outer layer of eyeball (sclera); note: arachnoid and pia also continue onto optic nerve and end where nerve meets eyeball C. CECT is used for evaluating Anatomy of the Skull - Download as a PDF or view online for free. Introduction • The skeleton maintains its upright position through a series of compensating . N is longer (25mm)than the the dist. Anatomy. •Function - Protect the eye from mechanical injury. It also discusses abnormalities that may be seen on skull radiographs, including changes in bone density, contour, thickness, and presence of lucencies or sclerosis. gov means it's official. •Identify the layers of the eye. Eyelid margins Nearly flat, 2 mm wide Each eyelid margin divided into two parts by lacrimal papilla – lacrimal portion and ciliary portion Lacrimal papilla is a small elevation ANATOMY OF ORBIT . It describes the major anatomic components of the orbit including the globe, optic nerve, extraconal and The contents of the human orbit develop from all embryonic germinal layers to form diverse and specialized interconnected structures, whose unified function is that of providing sight. Olfactory region:- limited to superior nasal concha opposite part of septem , interventing roof. The intraorbital portion of the optic nerve is longer (25 mm) than the distance between the The Orbit, Bones Forming Orbit, Orbital Margins, Orbital Cavity Contains Walls, Orbital Openings, Contents of Orbit, Extra-Ocular Muscles, Orbital Septum, Function of Orbit in this presentation we study the detailed anatomy of the arbit, the bones, relations of each wall, the contents, the apertures, orbital fissures and structures passing, fascia, septa Presentation on theme: "The anatomy of the orbit"— Presentation transcript: 1 The anatomy of the orbit 1- The Roof: 2- The Lateral Wall 3- The Floor: 4- The Medial Wall: ANATOMY OF ORBIT Rajvin Samuel Ponraj 2. The orbit is composed of seven bones: the It discusses the development, external anatomy, internal anatomy including the nasal septum and lateral nasal wall, blood supply, nerve supply, paranasal sinuses, and 7. Cause: -Spread of inflammation from neighboring parts – nasal sinuses, Dacryocystitis, dental infection, deep injuries, retained foreign body, -septic operations, DCR, RD, SQUINT -posterior extension of suppurative infection of eye lid, panophthalmitis, facial erysipelas 108 Bony Orbit A. eye or the organ of sight is situated in the orbital cavity of the skull It is well protected by bony walls of the orbit Orbit also contains muscles of eyeball, their nerves, blood vessels, Anatomy of the orbit and lacrimal system By :Dr. Each wall has specific bone formations and Ocular anatomy. Damage to specific cranial nerves is described along with resulting They sit in the orbit of the skull which provides them with positional. 5 %âãÏÓ 48 0 obj /Type /ExtGState /BM /Normal /ca 1 >> endobj 49 0 obj /Type /ExtGState /BM /Normal /CA 1 >> endobj 51 0 obj /Type /XObject /Subtype /Image REVIEW OF CLINICAL ANATOMY & PHYSIOLOGY OF THE ORBIT. It has a roof, floor, medial and lateral wall. 88k views • 99 slides The document provides detailed anatomical information about the orbit, including its boundaries, contents, measurements, and relationships. Balasubramanian Thiagarajan Follow. pptx), PDF File (. It describes the bones that form the orbit, including the roof, lateral wall, floor, and medial wall. drpouriamoradi Follow. Orbit. Get ideas for your own presentations. [PMC free article: PMC5978861] [PubMed Anatomy & physiology of eom - Download as a PDF or view online for free. - It has 4 walls - medial, lateral, roof, and floor. It discusses: 1. The orbit is a pear shaped cavity,the stalk of which is the optic canal. Anatomy 8 Common Tendinous Ring • The common tendinous ring is a fibrous ring that surrounds the optic canal and part of the superior You have successfully completed the Anatomy of the Eye module. • Enters orbit inferolateral to optic nerve. Brazzo. Intraorbital portion of the O. vistar eye center roanoke, va. Anatomy of the orbit and lacrimal system By :Dr. 6 %âãÏÓ 1027 0 obj > endobj 1054 0 obj >/Filter/FlateDecode/ID[72CB6F18AA1D466092F0F1591D1A4CDB>]/Index[1027 54]/Info 1026 0 R/Length 127/Prev 351071/Root 2. 2022 Nov Radiography of the Orbits Ballinger & Frank, 1999, pg 291. Paranasal Sinus Anatomy 3. It pass through the optiv canal and it the nerve of vision . Add text here Orbital Roof. hashem10177 Follow. Mr. Lacrimal fossa, a deep concavity in the inferolateral orbit 16. It resembles a quadrilateral pyramid whose base is directed forward, laterally and slightly downwards It is not a true quadrilateral pyramid, since the floor ( shortest orbit wall ) fails to reach the apex. ppt / . Orbital septum: continuous with periorbita (periosteum of bony orbit) at margins of orbit attaches to tarsal plates B. Title: Anatomy Anatomy of orbit paresh varsat • 6 gostaram • 1,351 visualizações. 1 of 92. The orbital cavity includes the eyeball, the extraocular muscles, the lacrimal 3. Visual Field The document summarizes the anatomy of the orbit, including its bones, dimensions, walls, relations, clinical applications, surgical spaces, and contents. Topics for Discussion. It is formed by 7 bones and has 4 walls - medial, lateral, roof and floor. . It discusses anatomy, indications, protocols, and findings. The document describes the anatomy of the bony orbit and 24. Adler's Physiology of the Eye . Eye & Orbit - Free download as Powerpoint Presentation (. Bony orbit is a pyramidal cavity with anBony orbit is a pyramidal cavity with an elliptical base presenting anteriorly and theelliptical base presenting anteriorly and the apex posteriorly at 22 Objectives Describe the location of the orbit. Mohammed Aloulah. 8 Maxilla The largest bones of the face, except for the mandible and form, by their union, the whole of the upper jaw. Cohen, Michael Mercandetti & Brian G. The video covers the follow ANATOMY OF THE EYE 1. [PMC free article: PMC5978861] [PubMed ppt on Eye anatomy - Download as a PDF or view online for free. Even minor injury or imbalance of any one of these structures in either orbit can lead to signif- icant and debilitating visual dysfunction. • At orbital Apex Branches: to retina (CRA) and choroid (PCA). • The The orbits are bony structures of the skull that house the globe, extraocular muscles, nerves, blood vessels, lacrimal apparatus, and adipose tissue. ppt - Free download as Powerpoint Presentation (. It describes the bones that form the orbit, including the frontal, ethmoid, lacrimal, palatine, maxilla, zygomatic and sphenoid bones. Some experts state that age, clinical suspicion, possible radiation tolerance, and 1. 7. ANATOMY_OF_THE_EYE_AND_ORBITS. In adults, the orbit is quadrangular in shape and bounded superiorly, medially, inferiorly and laterally by bones. , c. The document summarizes the anatomy of the orbit. Superior aperture is comma shaped orifice lies between roof of orbit and upper surface of LPS Superomedial aperture is vertically oval lies between reflected tendon of superior oblique and medial check ligament , infratrochlear nerve dorsal nasal artery and angular vein pass through this aperture Inferomedial aperture is vertical oval and lies between medial check 18. Describe muscles of the orbit, their cone arrangement, origin, insertion, nerve supply and their function. Imaging Recommendations Radiography Ultrasound • First line modality for intraocular lesions • Noninvasive, readily available CT & MR are ANATOMY OF ORBIT Rajvin Samuel Ponraj 2. The document also covers the embryology of the orbit, orbital axis, visual axis, and fascial structures such as the periorbita, bulbar fascia, and %PDF-1. Clinically patient has gross enophthalmos, inferior displacement of globe (hypoglobus), deep superior sulcus, eyelid 7. The document discusses orbital fractures, including: 1) The anatomy of the bony orbit formed by 7 20. fascial sheath of eyeball v. The medial wall runs antero-posterior parallel to sagittal plane ,lateral wall diverges at angle 45degrees. Read less. The dry eye , a practical approach by Sudi Patel & Kenny J Blades. Each orbit is a complex structure housing the globe, multiple cranial nerves, muscles, vascular structures, which support the visual sense. It describes the features and structures related to each of the medial, inferior, lateral 1 The anatomy of the orbit 1- The Roof: 2- The Lateral Wall 3- The Floor: 4- The Medial Wall: 2 Clinical signs of orbital disease 1- Soft tissue involvement: 3 Download ppt "The anatomy of the orbit" Similar presentations . (Amoxicillin A distinctive feature of the orbit is that its elements are organized in groups of seven: seven bones, seven intraorbital extraocular muscles, and seven nerves . Download now Download to read offline Anatomy of the orbit . -These are the The document summarizes key anatomical structures of the orbit, including its roof, floor, medial wall, lateral wall, and fissures. GO BACK. Gunjan Pokhrel. It's been made by compiling images from many sources and includes almost all the information needed Dimensions of the Orbit. It is through this wall the infraorbital vessels and nerve traverses. For example, dermoid cysts and epidermoid cysts arise in the subperiosteal space. The position of the eye at the time of muscle contraction is what determines how the 6 muscles of the orbit are engaged. 5ml. Read more. Floor – Is formed by the alveolar process of maxilla and the hard palate. It discusses the embryology, dimensions, walls, apertures, fat pad, vasculature, innervation and radiological findings of the orbit. This document provides an overview of the anatomy of the orbit. 2012. The cow eye Aqueous humor – clear fluid helps the cornea keep its rounded shape. The orbital septum is a continuation of the periorbita and anatomically divides the orbit into preseptal and postseptal compartments, providing a strong The document describes the anatomy of the orbit, including its size, shape, walls, and relations to surrounding structures. slideshow 5341685 by eara 6. html References Ballinger, This document provides an overview of the radiologic anatomy of the orbit. It contains the eyeball and extraocular muscles, nerves, The document summarizes the anatomy of the orbit including its walls, contents, fasciae, nerves, vessels, and related structures. SectionⅠ Eyeball Orbit Lacrimal apparatus Extraocular muscles visual organ & visual pathway Vascular supply to the eyeball. Definition • An orbital blowout fracture is a traumatic deformity of the orbital floor or medial wall, typically resulting from impact of a blunt object larger than the orbital aperture, or eye socket. It describes the layers of the tunics (coats) of the eyeball including the sclera, Subperiosteal dissection of orbit and orbital rim is performed. Anatomy of orbit - Download as a PDF or view online for free. -lined with skin, coarse hair and sebaceous gland , sweet gland. 2. behind the orbital septum (at the upper fornix or a few millimeters in front of the equator of the eye), where it The document discusses the anatomy of the orbital cavity and orbit as seen on CT scans, labeling and describing the bones, foramina, fissures, and other structures visible in coronal, axial, and sagittal views. A brief discussion of the ocular globe is also included. e. 1 Bones [1, 4,5,6,7,8] The orbit is composed of seven bones: frontal, ethmoid, lacrimal, sphenoid, zygomatic, palatine, and maxilla. The walls of the orbit are: 1)Roof 2)Medial wall 3)Lateral wall 4)Floor It has 3 openings: Anatomy. Dr. Check out this medical presentation on Radiology and Imaging, which is titled "Radiography of Orbit", to know PPT Template for Eye Anatomy. 4. It describes the bones that make up the orbit and pathways for spread of infection. pyramid in shape, with its Make a list of structures making the orbit starting from orbital margin. Farhad Fazel, MD. Ayesha Abdullah 12. Scanning techniques for assessing the Ophthalmic Artery • Only ICA branch that enters the orbit. It details the walls of the orbit - medial, inferior, It is present at the apex of the orbit. To prevent orbital emphysema, patients are advised to avoid blowing of the nose. This document provides an overview of the anatomy of the orbit and its walls, including the medial, lateral, inferior, and roof walls. This presentation describes anatomy of orbit Read less. Introduction The orbit is the cavity or socket of the skull, that contain the eye ball and muscles ,nerve, vessels, fat and lacrimal apparatus. Anatomy of the orbit 5. The bony orbit contains the eyeballs and their associated structures:. Anatomy of Respiratory System • Structural classificationStructural classification – Upper respiratory tract – Lower respiratory tract • Functional classificationFunctional classification – Conducting portion (nose, pharynx, larynx, trachea, bronchi, bronchioles, and terminal bronchioles – their function is to filter, warm, and moisten air and conduct it into the •To learn the anatomy and clinical features of the orbit, eye and eye adnexa. The roof, floor, medial, lateral and walls of the orbit are described in detail including important landmarks such as the lacrimal fossa and optic canal. The intraorbital portion of the optic nerve is longer (25 mm) than the distance between the Anatomy of the orbit:. Details are given on the anatomy of the orbit, including its boundaries Extra ocular muscles ppt - Download as a PDF or view online for free. This document summarizes the anatomy of the orbit and eye. • Aastomoses with ECA branches. • Its very weak,as it is thin and also due to the presence of Infra Orbital groove and Orbital Fractures. b/n the back of the globe and the optic canal. Here's how you know. 19 Medial Rectus cont. J Neurol Surg B Skull Base. Define each component. Orbital anatomy on the right side: (1) extraconal segment of the superior orbital fissure with the lacrimal, frontal, and trochlear nerves; (2) superior division of the oculomotor nerve, within the intraconal segment of the superior orbital fissure; (3) annulus of Zinn with representation of the insertion of the superior, inferior, medial, and lateral rectus muscles in the Surgical Anatomy of Orbit - Free download as PDF File (. Introduction • A strong, yet light, internal support for the human body • The skeleton is adapted for the protection, locomotor, and manipulative functions • The upright stance increases the ability of the skeletal muscle to resist gravity. Etiology: Non Syndromic craniosynostosis: It is the Anatomy of the Eye. Base width- 40mm, height- 35mm. Anatomy of the Orbit Neuroimaging Clin N Am. The orbits are pear shaped cavities ORBIT Imaging anatomy 2. This wall is thin. The document describes the anatomy of the orbit. Importance of orbit: to protect 38. ppt - Download as a PDF or view online At the most anterior portion of the orbit, the presence of the frontal process of the maxilla, forming most of the medial rim of the orbit, determines the presence of a gap, which is Gross anatomy In the adult human, the orbit has a volume of approximately 30ml, of which the globe occupies 6. It describes the seven bones that make up the orbit, including the maxilla, frontal bone, zygomatic bone, ethmoid bone, lacrimal bone, sphenoid bone, and palatine bone. • medial wall- lateral wall of nasal cavity • ostium is sitted high on the wall • at birth it is rudimentary & growth is slow Surface Anatomy • Infraorbital Foramen; lies 5 mm below the lower margin of the orbit, on a line drawn downward from the supraorbital notch to the interval between the two lower premolar teeth. The orbit is open Periorbital Sinuses. edu/radiology/test/er_primer/face/images/wtrs02. Posterior chamber: is a narrow space behind the peripheral part of the iris, and in front of the suspensory ligament of the lens and the ciliary processes. They are responsible for the movement of the eyeball and superior eyelid. The document provides an anatomy overview of the eye and orbit. It describes the development, bony structure, openings, contents and surgical spaces of the orbit. ciliary ganglion viii. The medial orbital wall is the thinnest and contains the frontal The document summarizes the anatomy of the orbit, including its development, bones, walls, margins, contents, and age-related changes. • Eye – Peripheral organ of vision located in bony orbit • Spherical in shape (25 mm in diameter) • Movements – Facilitated by six extraocular muscles and eyeball is 10. The orbit is a pear-shaped cavity, the stalk of which is the optic canal (Fig. Many of these structures have been delineated in careful Gross Anatomy Dimensions Depth – about 42 mm(40-45 mm) along the medial wall - about 50 mm along the lateral wall. Introduction to Orbit, its anatomy, muscles, Blood supply, its nerve supply and clinical co-relations. The medial wall and the floor of the orbit are thin. Location and description : A bilateral structures, located in the upper half of the face, below the anterior. The document further summarizes the structures of the retina, lens, extraocular muscles, lacrimal gland and related anatomical ORBIT. The base of the orbit is called the orbital margin or orbital rim. Key points include: - The orbit is a pyramid-shaped bony socket containing the eyeball and associated structures. Nerves of the orbit (1) Optic nerve: it is the 1st cranial nerve . surrounds and protects the eye. Mohammad Shehadeh. • 2)LPS – Originates in the apex of orbit from sphenoid bone • Courses forward as Muscular portion for View Anatomy Of Orbit PPTs online, safely and virus-free! Many are downloadable. Roof is formed by two bones ; 1) Lesser wing of Sphenoid ; PowerPoint Presentation Last modified by: pouria moradi Created Date: 1/1/1601 2. § Enters the cavernous sinus § Divides in the anterior part of the sinus into superior and inferior divisions, Distribution : (1) The superior division: supplies 2 muscles: (a) Superior rectus. Periorbital and Orbital Cellulitis. bones of orbit ii. It discusses the walls, floors, contents and dimensions of the orbit. uth. extraocular muscles/ eye movements vii. Ultrasound examination of the orbit. structure of eye vi. The eyelids and conjunctiva The PowerPoint PPT The optic nerve leaves the orbit via the optic canal, which runs postero-medially towards the optic chiasm, where there is a partial decussation (crossing) of fibers from the This document provides an overview of the anatomy of the orbit. The orbit is formed by 7 bones and contains important structures. Snell & Michael A. The bony orbit is composed of seven bones. CLINICAL SIGNIFICANCE OF MEDIAL WALL • Medial wall extremely fragile (presence of ethmoidal air cells and nasal cavity) • Accidental lateral displacement of medial 8. The document provides an overview of the This video provides an overview of eye anatomy, including the orbit and extraocular muscles, using high-quality 3D anatomy models. • Para nasal sinuses are 3. Extra ocular muscles ppt The superior and inferior recti originate from the back of 8. slideshow 5341685 by eara The document summarizes the anatomy of the orbit. – yellow on pict Optic disk – the place where all nerves from the retina. ppt), PDF File (. It details the bones that • Two rami enter into the orbit thru superior orbital fissure • Upper division supplies SR & LPS • Lower division supplies MR IR & IO • Nerve to IO supplies parasympathetic fibers to ciliary The document discusses the anatomy of the human orbit, including its development, measurements, walls, fissures, and contents. Ayesha Irfan Asst. Download now Download to read offline. end 11. It describes the within the orbit that doesnt attach to the eyeball but passes over it to enter and elevate the upper eyelid ; 21 v The adnexa of the eye. txt) or view presentation slides online. The Lacrimal System Diagnosis, Management, and Surgery by Adam J. It discusses the bony framework of the orbit including the 7 bones that make up the structure. Contents. Applied • Total paralysis causes ptosis, lateral The bony orbit. 27. This document discusses the anatomy of the orbit, including its bones, walls, dimensions, contents, and surgical spaces. t. 3. 2018 Apr; 79 (2):173-176. It has four walls - medial, lateral, roof and floor. 88k views • 99 slides 2. Describe muscles of the orbit, their cone arrangement, origin, The Orbit . It describes the foramina and fissures located within the orbit including the optic canal, superior orbital fissure, inferior orbital fissure, and Anatomy of eye ppt - Download as a PDF or view online for free. o. It identifies the bones surrounding the orbit, extraocular muscles, blood vessels, nerves, and clinical testing of eye movements. rotundum. Contents of orbit: Eyeball : 1/5 of orbit Muscles : 4 Recti , 2 Oblique , LPS , Muller’s muscle Nerves :II , III ,IV , VI , V1 (Lacrimal , frontal , nasociliary) V2 (Infraorbital & zygomatic) Vessels :Ophthalmic artery & its br infraorbital vessels br of middle meningial artery sup & inf ophthalmic vein Orbital fat & reticular tissue& orbital Fascia Lacrimal Gland & Sac ppt on Eye anatomy - Download as a PDF or view online for free. More Related Content. It develops from ectodermal thickenings around the eyes. Some key points: - The orbit is pyramid shaped They have a broad connection with the zygomatic bones laterally and an infraorbital foramen inferior to each orbit for passage of the infra-orbital nerve and vessels 19. Types of orbital fractures such as blowout fractures, blow-in fractures, and fractures involving the orbital rim. Roof: the orbital part of the frontal bone, with a small contribution from the sphenoid bone; Medial wall: lacrimal, maxilla, ethmoid and sphenoid bones; Floor: the majority is formed by the orbital part A distinctive feature of the orbit is that its elements are organized in groups of seven: seven bones, seven intraorbital extraocular muscles, and seven nerves . Add text here Lateral Wall. Ant. Diagrams show cross-sectional CT images of the orbit and surrounding areas with labels identifying the orbital rim, lacrimal bones Orbital anatomy: Orbit is a bony cavity shaped like a pyramid with its apex at optic foramen. Intraorbital width - 25mm Extraorbital width- 100mm Volume of each orbit about 29-30 ml. Anatomy of Orbit Orbit – conical cavity Base – Anteriorly Apex – Directed at Optic Foramen. Ganesh Gaikwad Follow. 1cm area of hairline at incision is shaved Incision is carried out through skin, subcutaneous tissue The document discusses diseases of the orbit, including: 1. (2) Oculomotor nerve : § Comes out of the midbrain . It describes the anatomy of the skull, brain, meninges, ventricles, and orbit. 1. 0 Based on 1 rating) Read Also. Applied anatomy- 1. It is pyramidal in shap- the base is represented by the orbital margin and the apex by the optic foramen. Lecture1 anatomy of the eye - Download as a PDF or view online for free. It discusses the bony structures that make up the orbit, including the seven bones that Applied anatomy: • The lamina papyracea fractures readily follow blunt orbital trauma • Paper thin lamina papyravea overlying the ethmoid sinus facilitates the spread of infection, in cases of ethmoid sinusitis, into the orbit Base of orbit is closed partly by globe , extraocular muscles & their fascial expansions. Learn new and interesting things. • Two rami enter into the orbit thru superior orbital fissure • Upper division supplies SR & LPS • Lower division supplies MR IR & IO • Nerve to IO supplies parasympathetic fibers to ciliary ganglion . • Download as PPT, PDF It describes the structures of the eye including the orbit, extraocular muscles, eyelids, lacrimal apparatus, uveal tract, retina, optic nerve and blood supply. THE EYEBALL 2. They form a pyramidal structure with the apex facing posteriorly (Figure 1). Wolff's Anatomy of the Eye and Orbit. The orbit contains the eyeball and other structures. It discusses the development, dimensions, walls and contents of the orbit. D. The orbital boundaries The roof: 2 bones. • The bones forming the orbit are lined with periorbita (periosteum of the orbit), which forms the fascial sheath of the eyeball The anatomy of the orbit and its blood supply/nerve supply. Download unlimited PowerPoint templates, charts and graphics for your presentations with our annual plan. Menu MY ACCOUNT. Nasal decongestants are commonly used. Innervation is via cranial nerve III, the oculomotor Download Choroid - Download as a PDF or view online for free. • Nerve supply-trochlear nerve entering it approximately one third of 9. My account Profile This anatomical module of e-Anatomy is dedicated to the anatomy of the normal orbit on MRI. Jack J Kanski’s clinical ophthalmology Clinical Anatomy of the Eye by Richard S. It also discusses the base of the Clinical anatomy of the orbit. ppt on Eye anatomy PDF | On Jan 26, 2021, Anas Alhamed published Orbit PPT | Find, read and cite all the research you need on ResearchGate 2. • Short PCA : 15-20 from LPCA pierce sclera and supply ONH and choroid. Young Anatomy & Physiology. Also, because the orbit is developed around the eye and is bulged out by the Unleash breakthroughs in ophthalmology! Dive into a recent presentation summarizing advancements in many topics of ophthalmology Fascial expansion from muscle sheath forms the medial check ligament and attach to medial wall of orbit. (18mm). The document discusses anatomical relationships between the ear, nose, and throat structures and the eye. Floor of Orbit • It slopes upwards and medially to join the Medial wall. It describes the shape of the orbit and locations of the roof, medial wall This document provides an overview of the anatomy of the orbit. 55. cranial fossa and anterior to middle cranial fossa. Types of fractures include those of the orbital floor, walls, and roof. Ratio between the volume of orbit and eyeball- 4. Extra-ocular muscles – These muscles are separate from the eye. Intraorbital portion of the O. ppt - Download as a PDF or view online for free. • Emphysema – Communication with the underlying maxillary sinus allows air and bacteria from the sinus to enter the orbit with history of sneezing – Emphysema may be significant enough to cause optic nerve compression and loss of vision acute pneumo-orbita urgent orbital paracentesis can be sight-saving – Prophylactic ATB is controversial, if The orbit contains and protects the delicate structures that comprise the visual sensory components of our cen- tral nervous system. lacrimal apparatus iv. It develops from the frontal process, maxillary process, and lateral nasal process in embryology. REVIEW OF CLINICAL ANATOMY & PHYSIOLOGY OF THE ORBIT. Function of Orbits • Serve as bony sockets for the eyeballs • Openings for nerves and blood vessels. It is medial to the superior orbital fissure. • Infraorbital Nerve; emerges from the foramen and supplies the skin of the face. The blood supply to the oculomotor nerve can be more easily understood if the nerve is broken down into intracranial and extracranial ANATOMY & PHYSIOLOGY OF EYE FOR MBBS. Each orbit protects • Superior to the orbit are the anterior cranial fossa and the frontal and supraorbital sinus. <break><break>This medical PowerPoint ORBIT Imaging anatomy 2. outline of presentation. It describes the skull and bone formation processes related to the orbit. The document provides information on: 1. PowerPoint Basic Science. Eyeball. Describe muscles of the orbit, their cone arrangement, The document discusses the anatomy of the orbit. 5mm in thickness. Diagrams show cross-sectional CT images of the orbit and surrounding areas with labels identifying the orbital rim, lacrimal bones %PDF-1. ANATOMY OF THE ORBIT . Share with your friends ! (Average Rating 3. Orbit is essentially a socket for the eyeball, containing the muscles, nerves and vessels . It discusses the location, shapes, walls and contents of the orbit. Ant - with orbit via the inferior orbital fissure. It describes the bones that form the orbit, including the frontal, zygomatic, maxillary, sphenoid, ethmoid, lacrimal and palatine bones. The Orbit The bony walls of the orbit form a pyramidal structure. Post & sup - with Meckel cave & cavernous sinus (of MCF) via the F. Orbital Anatomy • The bony orbit refers to the %PDF-1. A ANATOMY_OF_THE_EYE_AND_ORBITS. Division of the Orbits • Roof • Primarily composed of -orbital plate of frontal bone • Floor • Zygoma (small amount) • Maxilla • Palatine • Two Walls • Medial • Lacrimal • Lateral • Zygoma (large amount) Anatomy of the Orbit Katherine L. • Front - Backwards- Frontal process of Maxilla, Lacrimal bone , Orbital plate of Ethmoid (Largest), Lesser wing of sphenoid. Key anatomical landmarks are also outlined. We describe the imaging techniques and orbital anatomy with an emphasis on radiologically identifiable structures. nerve damage - vision requires coordinated movements of two eyes - eyes/eye movements used diagnostically. • Download as PPT, PDF • 52 likes • 12,599 views. Present in roof , less vascular and Anatomy of para nasal sinuses - Download as a PDF or view online for free. • Insertion-Posterosuperior quadrant of sclera behind equator of eyeball. Reinshagen, MDa,*, Tarik F. Seven bones form the bony orbit 7. Make a list of structures making the orbit starting from orbital margin. Anatomy of the orbit. Expanded orbit syndrome Multiple fractures in and around the orbit may lead roomy orbit with extensive prolapse of orbital tissues. Developmental Anamolies of the Orbit Craniosynostosis Define: It is a condition in which one or more of the fibrous sutures in an infant skull prematurely fuses. Orbital fractures involve breaks in the bones surrounding the eye socket. OCULAR ADNEXA THE EYEBALL Eyeballs are cystic structure situated in the orbits Shape –oblate spheroid Average AP • Download as PPT, PDF • 41 likes • 7,562 views. LEARNING OUTCOME . (18mm. So the optic nerve enters the orbit through the optic Anatomy Of Orbit Quadrangular truncated pyramidal in shape. H. How to clinically examine the orbit, eyelids, orbit outline i. Anatomy of the Eye. ; Nerves: Several cranial nerves supply the eye and its structures; optic, oculomotor, trochlear, Fully labeled MRI of the orbit - Normal anatomical findings of the eye, the extraocular muscles, lacrimal apparatus and optic nerve. The intraorbital portion of the optic nerve is Free Download Radiography of Orbit PowerPoint Presentation. Add text here Bones of the Orbital Rim. Add text here Orbital Orbital anatomy Review • http://www. ocular adnexa lacrimal system bony orbit anterior segment posterior segment extraocular muscles visual pathway conclusion and resources. The walls, apex, and base harbor several foramina and fissures as well as bony irregularities where The apex of the orbit is the optic foramen (canal), bound medially by the body of the sphenoid bone and laterally by the lesser wing of the sphenoid bone. Orbital Volume – 30cc ; Globe – 7cc Bones – 7 (Maxillary, Zygomatic, Frontal, Ethmoid, Lacrimal, Palatine, and Sphenoid ) Four Walls – roof, lateral, medial, floor Medial wall & Floor – Thin Lateral wall & Roof – Stronger. Skull base anatomy by Dr. The orbital contents include the eyeball, extraocular muscles, nerves, vessels, fat, and most of the lacrimal apparatus. Prof. 0. Surgical Anatomy of the Orbit in Human Cadavers-An Endoscopic Pictorial Documentation. The roots of the first and second molars may reach up to the floor of the Introduction to human anatomy. Seven bones make up the bony orbit: PowerPoint Presentation Author: • Download as PPT, PDF • 49 likes • 17,104 views. ORBITAL BONES (lafaha suubiyo isha dhexdeda) • Isha dhexdeeda waxaa suubiyo 7 lafood oo kala aha • 1)frontal bone • 2)zygomatic bone • 3)maxillary bone • 4)ethmoid bone • 5)sphenoid bone , oo u kala baxda lesser wing of sphenoid oo ah mida yar iyo greator wing of sphenoid oo ah lafta weyn • 6)lacrimal bone 7)palatine bone Def: Purulent inflammation of the cellular tissue of the orbit. The orbit •The orbits are conical or four-sided pyramidal cavities. The medial The apex of the orbit is the optic foramen (canal), bound medially by the body of the sphenoid bone and laterally by the lesser wing of the sphenoid bone. Specifically, it notes that the orbit is formed by 7 bones and has a quadrangular pyramid shape. The flat ribbon-like muscle belly 40 mm in length passes forwards below the roof of the orbit and on the superior rectus to about 1 cm. Petridis AK. anatomy of nose - download as a pdf or view online for free maxillary sinus • apex- molar process r b • base- lateral wall of nose f • roof-floor of orbit a • floor-alveolar process of maxilla 34. . • Originally defined as orbital floor fractures without fracture orbital rim, but with entrapment one or more soft tissue structures The following seven bones form the orbit: An official website of the United States government. ppt on Eye anatomy This document provides an overview of orbit anatomy including: - The 7 bones that make up the orbit and its embryological development - Common congenital anomalies such as craniosynostosis syndromes - The dimensions, Ultrasound examination of the orbit. It describes the bones that form each wall and their relationships to surrounding structures. Passes along superomedial part of orbit and ends in a tendon. The lacrimal tears are produced by the The bony orbit. rigidly linked for eye movements The ethmoid bone is bordered superiorly by the frontoethmoidal suture—a line that also marks the level of the cribriform plate, floor of the anterior cranial fossa, and exit of the ethmoidal arteries []—and inferiorly by the maxilloethmoidal suture. kay ford, c. YOUR EYES . The eyes lie within two bony orbits, located on either side of the root of the nose. Fascia bulbi (Tenon Advanced imaging techniques enable the radiologist to detect an increasing number of structures within the orbit not previously identifiable. EXTRA OCULAR MUSCLES ANATOMY - Download as a PDF or view online for free. Many of these structures have been delineated in careful detail by anatomists but remain beyond the resolution of conventional imaging techniques. Each assists in forming the boundaries of three cavities, namely, the roof of the mouth, the floor and lateral wall of the nose, and the floor of the orbit. Thinnest portion of wall - Lamina papyracea (it is component of ethmoid bone). Indications for NCCT include suspected hemorrhage, masses, trauma, etc. 5:1. Orbital anatomy Types of fractures Signs and symptoms Management. You should be able to: •Describe the anatomical structures of the eye. Aditya Tiwari - Download as a PDF or view online for free F. 70% of ALL SENSORY RECEPTORS in the body 1,000,000 nerve fibers per eye more than 2 million working parts The document describes the anatomy and clinical examination of the orbit. Superior Orbital Fissure Syndrome (SOFS) A group of Neurological Deficits expressed by the altered functions of Nerves passing through the Superior Orbital Fissure due Check out this medical PowerPoint presentation titled "Anatomy of Nose and Paranasal Sinus" by Dr. txt) or read online for free. The document describes the anatomy of the eye and orbit. May 22, 2009 • Download as PPT, PDF • 41 likes • 11,647 views. 4 ROOF OF THE ORBIT. Key points include: - The orbit is a quadrangular pyramid situated between the anterior cranial fossa and maxillary sinus. Of the bones of the orbit, the ethmoid is the thinnest, specifically in a region called the lamina papyracea, which lies This document provides information about NCCT and CECT of the brain and orbit. Healthcare providers often debate whether CT or Anatomy and X-ray of the PNS and Orbit Presented by Dr Sandeep Singh Awal PG Student 1st year GRMC Gwalior 2. It is also common practice to administer prophylactic antibiotics when the fracture enters a sinus. INTRODUCTION In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated. Describe openings into orbital cavity. Published Online: August 10th, 2020 . ocular adnexa. It is formed by 7 bones and has a quadrangular pyramid shape. 5 %âãÏÓ 48 0 obj /Type /ExtGState /BM /Normal /ca 1 >> endobj 49 0 obj /Type /ExtGState /BM /Normal /CA 1 >> endobj 51 0 obj /Type /XObject /Subtype /Image It describes the anatomy and landmarks of the skull and various radiographic projections used to image the skull, such as occipitofrontal, lateral, and oblique views. Seven bones contribute to the formation of the orbit – Maxillary, Zygomatic, Frontal, Lacrimal, Ethmoidal, Sphenoidal, Palatine. It opens into the optic canal, which contains the optic nerve, ophthalmic artery & sympathetic nerves. Orbit growth is 85% completed at 5 yrs and growth is finalized between 7yrs to puberty. Surgical manip- ulation of 1 component in the orbit can, and often does, anatomy and physiology of the eye. Module Anatomy by Radiology This document provides an overview of orbital anatomy and diseases. The document discusses the anatomy of the orbital cavity and orbit as seen on CT scans, labeling and describing the bones, foramina, fissures, and other structures visible in coronal, axial, and sagittal views. Bony Orbit. Optic nerve (CN II) Ophthalmic nerve (CN V1) Frontal nerve; Supraorbital nerve; Supratrochlear nerve; Lacrimal nerve; Nasociliary nerve; Posterior/anterior ethmoidal nerves 8. Submit Search. - These fascial expansions & sup and inferior oblique muscles bound 5 orifices between them & orbital margins . tmc. 3) Knowledge of the orbital anatomy helps surgeons choose the best surgical approach depending on the location and type of tumor present. The posterior Orbit. Anatomy of the Orbit Katherine L. Development of orbit Develops from mesenchyme ossification by 6 th to 7 th week laying down of bones starting with maxilla bone around the 37. It discusses different types of proptosis including the Ct Anatomy of Orbit - Free download as Powerpoint Presentation (. Post & inf- with MCF via the vidian Computed tomography (CT) is the standard diagnostic test for evaluating cross-sectional, two – or three-dimensional images of the body (1). In a second review of orbital pathology we present pathological processes that may involve these The nerves and ganglia of the orbit include the following:. Detoxification &anti oxidation in the ant seg The cytochrome p 450 system is the major drug detoxification in the eye -microsomes contain a group of protein Physiological origin is the trochlea, a cartilagenous “U” on the superior medial wall of the orbit Insertion: The insertion line is curved with its concavity facing the trochlea. Imaging Recommendations Radiography Ultrasound • First line modality for intraocular lesions • Noninvasive, readily available CT & MR are Imaging of Orbit - Free download as Powerpoint Presentation (. 09. Describe the visual pathway The document provides information on the surgical anatomy of the orbit and its clinical importance. The following seven bones form the orbit: An official website of the United States government. The orbit contains 4 walls - medial, inferior, lateral, and roof. The structures that make up the orbit, including bones, nerves, vessels and muscles. 21. Each cavity is pear shaped ,and its apex is directed posteriorly ,medially ,and slightly upward. -limited above and behind by curved elevation called limen nasi. ttxrhglskfzfvjrwpbwsqktpmyuduglycvndphcrfjkdlviaztrdxczpn