Which cells of the retina enable us to see coloured objects around us?

What are the blind spot and the fovea?

Identify the correct sequence of cells in the retina from the outside to the inside.

Good vision depends on adequate intake of carotene-rich food. Select the most appropriate option from the following statements.
$I.$ Vitamin $A$ derivatives are formed from carotene.
$II.$ Photopigments are embedded in the membrane discs of the outer segment.
$III.$ Retinal is a derivative of Vitamin $A$.
$IV.$ Retinal is a part of all photopigments that absorb light.

Which of the following are functions of the cone cells of the retina?
$1.$ Photopic vision
$2.$ Colour vision
$3.$ Scotopic vision

$A$ convex lens is used to correct which of the following vision defects?