The common eye defect that occurs in old age is .......

The scotopic vision is developed through the stimulation of

What is the function of ciliary muscles?

Suppose a person wears convex glasses for proper vision. Where do you think the image of the object is formed in his eyes when he is not using the glasses?

Rhodopsin $(visual\, purple)$ of the eye will require which of the following for its synthesis?

If a bright light falls over the eyes,why is a person unable to see for a moment?