ABO NOCE Basic Opticianry Ocular Anatomy and Physiology Questions and Answers 4

Question 1

The choroid is primarily responsible for:

Accepted Answer

Providing oxygen and nutrients to the outer retina

Answer

The highly vascular choroid supplies oxygen and nutrients to the outer one-third of the retina, including the photoreceptors.

Question 2

Bowman's layer is located between which two corneal layers?

Accepted Answer

Epithelium and stroma

Answer

Bowman's layer is an acellular condensation of stromal collagen immediately beneath the corneal epithelium.

Question 3

Which cranial nerve innervates the lateral rectus muscle?

Accepted Answer

CN VI (Abducens)

Answer

The lateral rectus muscle, which abducts the eye, is exclusively innervated by the abducens nerve (CN VI).

Question 4

The retinal pigment epithelium (RPE) performs all of the following EXCEPT:

Accepted Answer

Production of aqueous humor

Answer

Aqueous humor is produced by the ciliary body epithelium, not the RPE; the RPE supports photoreceptors through phagocytosis, pigment recycling, and light absorption.

Question 5

The blind spot in the visual field corresponds to which ocular structure?

Accepted Answer

Optic disc

Answer

The optic disc (where the optic nerve exits) has no photoreceptors, creating the physiological blind spot in the visual field.

ABO NOCE Basic Opticianry Practice Test

ABO NOCE Basic Opticianry Practice Test

ABO NOCE Basic Opticianry Ocular Anatomy and Physiology Questions and Answers 4