Question

Differentiate between the following on the basis of what is given in brackets:

(a) Myopia and hypermetropia (condition of eyeball)

Answer 1

Myopia:

1. It is a defect of vision of the eye which is also called short sightedness where a person is able to see near by objects clearly and not distant objects.

Hypermetropia:

1. It is a defect of vision of the eye which is also called far sightedness where a person is able to see distant objects clearly and not near by objects.

Myopia	Hypermetropia
The eyeball is lengthened along the horizontal axis.	The eyeball is shortened along the horizontal axis.
The cornea is curved and the lens becomes convex.	The cornea becomes less curved and the lens becomes flat.
The image is formed before the retina	The image is formed behind the retina.