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Ocular A&P #5 Final
Terms Ocular A& P #5 Final Uvea, Retina. Optic Nerve
Term | Definition |
---|---|
Iris Collarette | Thickest part of the iris |
Iris Root | Thinnest part of the iris |
Iris Crypts | Depressions on the iris surface |
Iris Pigment Epithelium | On the posterior iris |
Dilator Muscles | Causes dilation of the pupil |
Peripheral Anterior Synechia | Adheres the iris to the cornea |
Posterior Synechia | Adheres the iris to the lens |
Iris Bombe | The bowing forward of the iris due to synechia |
Iritis | Inflammation of the iris |
Cyclitis | Inflammation of the ciliary body |
Persistent Pupillary Membrane | Remnant of the hyaloid vessels |
Transillumination | Red reflex seen through the iris (common with albinos) |
Iridodialysis | Tear of the iris root |
Iris Processes | Normal attachments between the iris and the trabecular meshwork |
Anisocoria | Unequal pupils |
Pars Plicata | The ciliary processes are located on this |
Pars Planae | Flat part of the ciliary body |
Pars Plicata (produces) | Aqueous produced here |
Ora Serrata | Peripheral end of the ciliary body and the beginning of the retina |
Hippus | Normal fine contractions of the pupil |
Iridotomy | Hole in the iris-usually done by laser |
Sphincter Muscle | Causes the iris to contract |
Protein or Fibrin (cause) | Flare in the chamber |
Cones (4) | Color receptors, Mainly in Macula, 4-6 Million, Iodopsin pigment |
Rods (4) | Nighttime vision, Scotopic vision, 100 Million, Rhodopsin pigment |
Anomalous Trichromat | One pigment type cone functions below normal |
Ishihara | Color vision test |
Fovea | Capillary free zone, Highest concentration of cones |
Choriocapillaries | Blood nutrition to the outer retina and blood supply to fovea |
Central Retinal Artery | Blood nutrition to the inner retina |
Vortex Veins | Choroid is drained by these |
Central Retinal Vein | Retina is drained by this |
Cavernous sinus | Venous drainage goes to this |
Papillitis | Inflammation of the papilla |
Papilledema | Swelling due to increased intracranial pressure |
Neuritis | Inflammation of a peripheral nerve or nerves, usually causing pain and loss of function. |
Optic Cup | Is center of the nerve head and increases with glaucoma damage. |
Optic Disc | Creates a physiological blind spot |
Optic disc rim | Thins with glaucoma damage |
Ciliary (choroid) circulation | Blood supply to the nerve head (disc) |