FREE ABO NOCE Basic Opticianry Anatomy & Physiology of Eye Questions and Answers

Question 1

Which structure of the eye is responsible for the majority of the eye's refractive power?

Accepted Answer

Cornea

Answer

Lens

Answer

Aqueous humor

Answer

Vitreous humor

Question 2

A patient reports difficulty seeing in dim light and notes a decrease in peripheral vision. Which type of photoreceptor cell is most likely affected?

Accepted Answer

Rods

Answer

Cones

Answer

Ganglion cells

Answer

Bipolar cells

Question 3

Which of the following describes the primary function of the iris?

Accepted Answer

To regulate the amount of light entering the eye

Answer

To focus light onto the retina

Answer

To produce aqueous humor

Answer

To provide nourishment to the cornea

Question 4

What is the primary role of the ciliary body in the eye's anatomy and physiology?

Accepted Answer

To produce and secrete aqueous humor and control accommodation

Answer

To absorb stray light and prevent internal reflections

Answer

To provide structural support to the eyeball

Answer

To transmit visual signals to the brain

Question 5

Which layer of the retina contains the photoreceptor cells (rods and cones)?

Accepted Answer

Photoreceptor layer

Answer

Ganglion cell layer

Answer

Inner plexiform layer

Answer

Outer nuclear layer

Question 6

The optic nerve is formed by the axons of which type of retinal cell?

Accepted Answer

Ganglion cells

Answer

Bipolar cells

Answer

Amacrine cells

Answer

Horizontal cells