Fill in the following blanks with suitable words: A person is short-sighted if his eyeball is too …….. Spectacles with a ………… lens are needed. A person is long-sighted of his eyeball is too ……….. Spectacles with a …………. lens are needed. These focus light rays exactly on to the ………..
Vinay
Long, concave, short, convex, and retina are some of the shapes available.
