The condition in which the eye lens becomes milky and cloudy us called
(A) Myopia
(B) Cataract
(C) Hypermetropia
(D) Presbyopia

Hint: We can say that certain types of cataracts progress quite rapidly and cause cloudy vision within a few months. Fortunately, these are relatively uncommon. Most cataracts develop gradually and do not require surgery for many months or years. Cataract surgery is rarely painful and most patients who have gone through the procedure say they only had slight discomfort. After surgery, most patients are relieved how fast and relatively pain-free the procedure is.

Complete step by step answer
We know that a cataract is a dense, cloudy area that forms in the lens of the eye. A cataract begins when proteins in the eye form clumps that prevent the lens from sending clear images to the retina. The retina works by converting the light that comes through the lens into signals. Most cataracts develop when aging or injury changes the tissue that makes up your eye's lens. Some inherited genetic disorders that cause other health problems can increase your risk of cataracts. Cataracts can also be caused by other eye conditions, past eye surgery or medical conditions such as diabetes.
Sometimes, the crystalline lens of people at old age becomes milky and cloudy. This condition is called cataract which causes partial or complete loss of vision. However, now it is possible to
restore vision through a cataract surgery.

Hence the correct answer is option B.

Note: We can say that surgery is the only way to get rid of a cataract, but you may not need to get surgery right away. Home treatment. Early on, you may be able to make small changes to manage your cataracts. If left untreated cataracts can cause total blindness. The main treatment for cataracts is eye surgery. Sometimes changing your eyeglass prescription will help improve your vision, but often it will not. Eye doctors recommend having cataract surgery before your cataracts start seriously affecting your vision. Although it's never too late to have a cataract removed, it is better to have cataracts removed while they are immature, as this reduces the length of surgery and the recovery time. Earlier removal also means that you avoid the significant visual impairment associated with very mature (hyper mature) cataracts.