When different cones of the human eye are stimulated equally,a sensation of ...... light is produced.

In hypermetropia,the image is formed

Daylight (photopic) vision and colour vision are functions of $P$,while twilight (scotopic) vision is a function of $Q$.
$\quad\quad \quad P\quad\quad\quad Q$

The fovea centralis of the retina perceives:

In eye donation,which one of the following parts of the donor's eye is utilized?

Myopia (near-sightedness) in the human eye is a defect in which the image is formed...