The term CATARACT LOCATION can be solved by the four-letter word LENS. The LENS is a transparent structure located behind the iris and pupil of the eye. It helps to focus light onto the retina, which is responsible for sending visual signals to the brain. In the case of cataracts, the LENS becomes cloudy, resulting in blurred vision. Cataract surgery involves removing the cloudy LENS and replacing it with an artificial one.