THE ORBIT AND THE EYEBALL.pptx-THE EYE ANAT

HE ORBIT AND THE EYEBALL.pptx-THE EYE ANAT

1. THE ORBIT AND THE EYEBALL Feb 2023

2. Learning objectives Name the bones that form the various walls of the bony orbit List the contents of the bony orbit and state the role of each Review the fascial components that support the eyeball Describe innervation and actions of extraocular muscles Describe movements of the eyeball and muscles that enable the movements Review the visual pathway and outline role of extra-geniculate projections of optic tract

3. Learning objectives 7. Describe pathways related to direct and consensual pupillary light reflexes 8. State the components of the lacrimal apparatus 9. Describe pathway of general sensory and secreto -motor innervation of the lacrimal gland 10. Name the tunics of the eyeball and state the components of each

4. The orbit Walls of the orbit Presenting features F ossae Foramina and contents Fissures- and contents Relations of the orbit

5. Orbit

6. Contents Eye ball Muscles Nerves CN II, III, IV, VI Ciliary ganglion Ophthalmic Arteries and veins Ophthalmic Gland Lacrimal Fascial components Fat

7. Muscles of the eyeball

8. Muscles of the eyeball

9. Fascial components Peri-orbita Common tendinous ring Tenon’s fascia Orbital septum Suspensory ligaments Check ligaments

10. Nerves of the orbit

11. Eyeball Tunics F ibrous coat Sclera and cornea and limbus Vascular coat (Uveal tract) Choroid, ciliary body, iris Nervous coat Retina

12. Tunics of the eyeball

13. The visual pathway

14. Lacrimal apparatus Lacrimal gland Lacrimal ducts Lacrimal puncta Lacrimal canaliculi Lacrimal sac Nasolacrimal duct Inferior nasal meatus