Answer the following :
(a) What is the function of the lacrimal gland and where is it situated in the body?
(b) In what two ways is the yellow spot different from the blind spot?
(c) Name an old-age eye defect. What causes it?
(d) What is meant by power of accommodation of the eye?
(e) Mention the characteristics of the image that falls on the retina of the eye.