During the night,when light intensity is low,it is detected by:

Iodopsin is a light-sensitive pigment and is present in the

What is the alternate name for the yellow spot in the retina?

How many eye muscles are present which control all types of eye movement?

Good vision depends on adequate intake of carotene-rich food. Select the best option from the following statements:
$(1)$ Vitamin $A$ derivatives are formed from carotene.
$(2)$ The photopigments are embedded in the membrane discs of the inner segment.
$(3)$ Retinal is a derivative of vitamin $A$.
$(4)$ Retinal is a light-absorbing part of all the visual photopigments.

Rhodopsin is a component of ....