In the blind spot demonstration, when staring at the + sign with your right eye, and moving the figure closer to your face, the dot in the figure suddenly disappears when it is focused on the
A)fovea centralis.
B)optic disc.
C)ciliary body.
D)macula lutea.
E)peripheral retina.

Question

Quizplus · Accepted Answer

The dot in the figure disappears when it falls on the optic disc, which is the blind spot of the retina where the optic nerve exits the eye. The fovea centralis, macula lutea, ciliary body, and peripheral retina are not related to the blind spot phenomenon.

In the Blind Spot Demonstration, When Staring at the