Nearsightedness is caused by a lack of cones in the retina, while farsightedness results from the deterioration of rods in the fovea.

Question

Quizplus · Accepted Answer

This statement is false. Nearsightedness (myopia) occurs when the eyeball is too long or the cornea is too curved, causing light to be focused in front of the retina rather than directly on it. Farsightedness (hyperopia) occurs when the eyeball is too short, causing light to be focused behind the retina. Both conditions are caused by a problem with the shape of the eye, not a lack of cones or deterioration of rods in the retina.

Nearsightedness Is Caused by a Lack of Cones in the Retina