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Question
In the following abnormalities of the eye, which one is a serious condition that leads to blindness?
In the following abnormalities of the eye, which one is a serious condition that leads to blindness?
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Solution
The correct option is D Glaucoma
Loss of flexibility in crystalline lens with age causes presbyopia which includes focusing on the image behind the retina. Both hypermetropia and presbyopia cause the formation of blurry nearby images which can be corrected by wearing of the convex lens. Myopia is caused by elongation of the eyeball which results in focusing of the image in front of retina and forms blurry distant images. Myopia is corrected using the concave lens. Glaucoma is caused by blockage of tiny ducts that drain the excess aqueous humor from anterior compartment causing a buildup of aqueous humor. This causes compression of the arteries that serve the nerve fibers of the retina due to increased pressure. The death of nerve fibers due to lack of nutrients makes the person partially blind. Thus, the correct answer is option D.
Loss of flexibility in crystalline lens with age causes presbyopia which includes focusing on the image behind the retina. Both hypermetropia and presbyopia cause the formation of blurry nearby images which can be corrected by wearing of the convex lens. Myopia is caused by elongation of the eyeball which results in focusing of the image in front of retina and forms blurry distant images. Myopia is corrected using the concave lens. Glaucoma is caused by blockage of tiny ducts that drain the excess aqueous humor from anterior compartment causing a buildup of aqueous humor. This causes compression of the arteries that serve the nerve fibers of the retina due to increased pressure. The death of nerve fibers due to lack of nutrients makes the person partially blind. Thus, the correct answer is option D.
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