Certified Ophthalmic Assistant Practice Exam

What correlates with the physiologic blind spot?

1. Cornea

2. Optic nerve

3. Pupil

4. Macula

The correct answer is: Optic nerve

The physiologic blind spot is where the optic nerve and blood vessels exit and enter the eye, resulting in a lack of photoreceptor cells in that area. The cornea, pupil, and macula are all parts of the eye, but they do not directly correlate with the physiologic blind spot. The cornea is the transparent front part of the eye, responsible for focusing light onto the retina. The pupil is the adjustable opening in the center of the eye that allows light to enter. The macula is a small, sensitive area in the center of the retina, responsible for sharp, detailed vision. Therefore, these options are incorrect because they do not specifically relate to the optic nerve and its role in the physiologic blind spot.