Short-sightedness or myopic vision is corrected by wearing:

In humans,corneal transplants are rarely rejected. This is because:

The amount of light entering the eye is regulated by the:

Human eyes are most sensitive to green colour. Its wavelength is approximately:

What is the function of cone cells?

Answer briefly:
$(a)$ How do you perceive the colour of an object?
$(b)$ Which part of our body helps us in maintaining the body balance?
$(c)$ How does the eye regulate the amount of light that falls on the retina?