Orris

Detailed anatomy of eye

Reading File
  1. External eye and orbit
    • Eyelids, conjunctiva, lacrimal apparatus
    • Bony orbit, extraocular muscles, fascial spaces, blood supply, and nerves
  2. Eyeball structure
    • Fibrous coat: sclera and cornea
    • Vascular coat (uvea): choroid, ciliary body, iris
    • Neural coat: retina and optic nerve
  3. Anterior segment
    • Cornea, anterior chamber, aqueous humour, iris, pupil, lens, and drainage angle
  4. Posterior segment
    • Vitreous body, retina, macula, fovea, optic disc, choroid, and sclera
  5. Visual pathway
    • Optic nerve, optic chiasm, optic tract, lateral geniculate body, optic radiations, and visual cortex
  6. Ocular movements and innervation
    • Actions of the six extraocular muscles
    • Cranial nerves III, IV, and VI, plus autonomic control of pupil size and accommodation
  7. Applied anatomy
    • Aqueous drainage and glaucoma
    • Retinal detachment, papilloedema, pupillary reflexes, and common nerve palsies
The eye is a roughly spherical sensory organ in the orbit. Light passes through the transparent cornea, aqueous humour, pupil, lens, and vitreous to reach the retina. The retina converts light into nerve signals, which reach the brain through the optic nerve and visual pathway.
Structurally, the wall of the eye has three coats: an outer protective fibrous coat, a vascular pigmented middle coat called the uvea, and an inner neural coat, the retina. The cornea and lens provide most focusing power, while the iris regulates the amount of incoming light through the pupil.
Which topic would you like in detail next: 1) eyeball layers, 2) chambers and aqueous humour, 3) retina, 4) orbit and extraocular muscles, 5) visual pathway, or 6) applied anatomy?
This is a shared conversation. Sign in to Orris to start your own chat.