Which of the following must happen for accommodation to occur
A)The shape of the cornea must change.
B)The shape of the lens must change.
C)The ciliary muscle must relax for near vision.
D)The ciliary muscle must contract for distant vision.

Question

Quizplus · Accepted Answer

Accommodation occurs when the shape of the lens changes. The lens becomes more or less curved depending on whether we are looking at a near or distant object. The ciliary muscle contracts to increase the curvature of the lens for near vision and relaxes to decrease it for distant vision. However, the shape of the cornea remains constant and does not change for accommodation to occur. Therefore, choices A and C are incorrect, and D is only partially correct.

Which of the Following Must Happen for Accommodation to Occur