Ocular Anatomy and Physiology Flashcards
6 cards from real COT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Ocular Anatomy and Physiology flashcards as text
The anterior chamber angle structures visible on gonioscopy, from posterior to anterior, are in which order?
Answer: Ciliary body band, scleral spur, trabecular meshwork, Schwalbe's line
From the most posterior to the most anterior, the angle structures are ciliary body band, scleral spur, trabecular meshwork, and Schwalbe's line.
The central retinal artery, the primary blood supply to the inner retina, is a branch of which vessel?
Answer: Ophthalmic artery
The central retinal artery is a branch of the ophthalmic artery and enters the optic nerve to supply the inner layers of the retina.
Which layer of the retina contains the cell bodies of photoreceptors?
Answer: Outer nuclear layer
The outer nuclear layer contains the nuclei (cell bodies) of rod and cone photoreceptors.
The lens of the eye is held in position by which structure?
Answer: Zonules of Zinn
The zonules of Zinn (suspensory ligaments) attach the lens capsule to the ciliary body, holding the lens in position and transmitting accommodative forces.
Normal intraocular pressure (IOP) in adults typically ranges from:
Answer: 10–21 mmHg
The statistically normal IOP range is 10–21 mmHg, with values above 21 mmHg considered ocular hypertension and associated with increased glaucoma risk.
The lacrimal gland drains tears onto the ocular surface through ducts that open into which area?
Answer: Superior fornix
The lacrimal gland's excretory ducts (approximately 10–12) open into the superior conjunctival fornix, releasing tears onto the ocular surface.