Cataracts are the clouding of the eye lenses that result in impaired or total loss of vision. This problem occurs when the protein in the eyes form clumps preventing the lens from sending visual information to the retina. The retina is in charge of converting these visual images into signals and sends them to the brain. This process is done over the optic nerve that transmits the information. So, when cataracts form in the eye, they end up blocking our vision and with time, the condition worsens enough and the result is total blindness.
Although cataracts don’t affect both the eyes at once, they can render you totally blind without proper treatment. The most effective way to treat a cataract is through surgery.