In humans,image formation occurs on the retina. For the brightest vision,it should form on:

In which part of the sclera blood capillaries are absent?

The vitreous humor is a jelly-like substance found in the posterior part of the ........

The aqueous chamber,which is filled with aqueous humour,is the space:

The ability to distinguish between different colors is possible in:

Which of the following statements are correct for the iris?
$(I)$. The ciliary body extends forward to form the iris.
$(II)$. It is a pigmented and opaque structure.
$(III)$. It is the visible coloured portion of the eye.
Choose the correct option.