COT Ocular Anatomy and Physiology 2

Question 1

The anterior chamber angle structures visible on gonioscopy, from posterior to anterior, are in which order?

Accepted Answer

Ciliary body band, scleral spur, trabecular meshwork, Schwalbe's line

Answer

From the most posterior to the most anterior, the angle structures are ciliary body band, scleral spur, trabecular meshwork, and Schwalbe's line.

Question 2

The central retinal artery, the primary blood supply to the inner retina, is a branch of which vessel?

Accepted Answer

Ophthalmic artery

Answer

The central retinal artery is a branch of the ophthalmic artery and enters the optic nerve to supply the inner layers of the retina.

Question 3

Which layer of the retina contains the cell bodies of photoreceptors?

Accepted Answer

Outer nuclear layer

Answer

The outer nuclear layer contains the nuclei (cell bodies) of rod and cone photoreceptors.

Question 4

The lens of the eye is held in position by which structure?

Accepted Answer

Zonules of Zinn

Answer

The zonules of Zinn (suspensory ligaments) attach the lens capsule to the ciliary body, holding the lens in position and transmitting accommodative forces.

Question 5

Normal intraocular pressure (IOP) in adults typically ranges from:

Accepted Answer

10–21 mmHg

Answer

The statistically normal IOP range is 10–21 mmHg, with values above 21 mmHg considered ocular hypertension and associated with increased glaucoma risk.

COT - Certified Ophthalmic Technician Practice Test

COT - Certified Ophthalmic Technician Practice Test

COT Ocular Anatomy and Physiology 2