Question

A serious eye defect which can lead to blindness is

• A. Myopia
• B. Hypermetropia
• C. Presbyopia
• D. Glaucoma

Answer 1

The correct option is D Glaucoma

A. Myopia occurs when eye ball becomes longer and it results in the formation of image in front of retina.

B. Hypermetropia occurs when eye ball becomes shorter and it results in the formation of image behind the retina.

C. Presbyopia occurs in the late age (generally after 40 years) due to loss of elasticity of eye lens due to which nearby objects are not correctly visible. It is corrected by using bifocal lengths.

D. Glaucoma is a disorder of eye in which the optic nerve which carries visual information to brain, is damaged and this leads to blindness because no visual information will be carried to brain and hence, no image will be formed and perceived.

So, the correct answer is 'Glaucoma'.