CPOA Ocular Anatomy 5

Question 1

Which part of the uveal tract is most anterior?

Accepted Answer

Iris

Answer

The iris is the most anterior portion of the uveal tract, followed by the ciliary body and then the choroid posteriorly.

Question 2

What is the primary function of the Bowman's layer of the cornea?

Accepted Answer

Structural support and protection

Answer

Bowman's layer is an acellular condensed collagen layer that provides structural integrity and protects the underlying stroma.

Question 3

The central retinal artery is a branch of which larger artery?

Accepted Answer

Ophthalmic artery

Answer

The central retinal artery is the first intraorbital branch of the ophthalmic artery, which itself is a branch of the internal carotid artery.

Question 4

What is the approximate axial length of a normal adult eye?

Accepted Answer

24–26 mm

Answer

The normal adult axial length averages approximately 24–26 mm, with deviations contributing to myopia or hyperopia.

Question 5

Which photoreceptor type is most sensitive to dim light conditions?

Accepted Answer

Rods

Answer

Rods contain rhodopsin and are extremely sensitive to low light levels, making them responsible for scotopic (dim-light) vision.

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