A) Cataract
B) Glaucoma
C) Dilation pupil
D) Some defect of retina
Correct Answer: A
Solution :
Ultraviolet radiations can cause cataract and skin cancer. These rays are absorbed by ozone layer present in stratosphere. Certain air. pollutants cause ozone depletion like\[C{{O}_{2}}\]chlorofluorocarbons. UV waves reacts with genetic material (DNA) and forms thymidine dimer this results in mutation. Gloucoma is due to increase intraocular pressure in aqueous chamber. Which occurs due to blockage of canal of Scheem. Dilation of pupil (central aperture in iris) takes place by the contraction of radial muscles.
You need to login to perform this action.
You will be redirected in
3 sec
