What is rhodopsin present in the rod cells?

The layer of the epidermis over the eye is:

Following are various structures/regions of the human eye. Choose the correct option with respect to the sequence of the passage of light for the formation of an image:
$(A)$ Cornea
$(B)$ Lens
$(C)$ Aqueous humor
$(D)$ Pigment epithelium of retina
$(E)$ Conjunctiva

$X -$ Rod cells' function is twilight (scotopic) vision.
$Y -$ Cone cells' function is daylight (photopic) vision.

In which part of the sclera blood capillaries are absent?

The retinal blood vessels enter the eye at