Question

Short sightedness or myopic vision is corrected by wearing
(a) Concave lens
(b) Convex lens
(c) Biconvex lens
(d) Biconcave lens

Answer 1

Hint: Myopia is the condition where an eye is not able to see far objects and the light focuses in front of the retina which causes distant objects to be blurry and the close objects appear normal.

Complete answer:
Short-sightedness or myopic vision is corrected by wearing concave lenses which are used to bend the light rays slightly outwards and the light rays have a greater angle to bend back towards the focus while travelling through the cornea and lens. This results in focusing the light rays back towards the retina. myopic vision is associated with an increased risk of glaucoma, cataract and retinal detachment which are caused due to a combination of genetic and environmental factors which includes then year work, greater time spent indoors and family history.
It can be prevented by spending more time outside for children and is diagnosed through an eye examination. It can be treated using eyeglasses and contact lenses or surgery in severe cases. It is the most common eye problem which is estimated to affect around 1.5 billion people. The proportion of male and females in China is comparatively higher for females than males and among children, it affects more than $37\%$ of Chinese cities. The lack of normal visual stimuli can cause improper development of the eyeball which refers to the environmental stimuli. The humans which stay indoors are at the highest risk of developing myopia.

So, the correct answer is 'Concave lens'.

Note:
The worsening of myopia can be decreased using antimuscarinic medications in children under the age of 18 years and these treatments may include cyclopentolate eye drops and pirenzepine gel. Myopia is of many types which include degenerative myopia, pseudo myopia and nocturnal myopia.