There is a “lens” inside the eye, which bends the light rays from objects at a distance towards the retina. It also helps younger people to change their focus from distance vision to near vision.
This lens is usually a clear lens. But in most individuals, with aging, this lens becomes clouded. (In some individuals, it can also be clouded at younger age, because of genetic or injury reasons). This clouded lens initially causes a loss of contrast, and difficulty to see at night. As the clouding progresses, the vision deteriorates, and there is a further loss of contrast, and difficulty in seeing bright lights. This kind of cloudy lens is known as a cataract.
At this point, once the patient is uncomfortable, it is best to remove the lens, and replace it with a new artificial lens. The modern technique to perform cataract surgery is known as phacoemulsification. In phaco-emulsification, a small hollow needle moving back and forth at an ultrasound frequency is used to break up the lens into tiny pieces, and remove it from the eye. The incision can be as small as 1.8 mm, and the patient is usually operated under only anesthetic drops. A foldable intraocular lens (IOL), which is made of polymer-plastic material, which goes in through a small incision, replaces the original lens.
Dr. Rupal Shah offers cataract surgery services. She is the clinical director of New Vision Laser Centers-CFS which offers state-of-the-art cataract surgery services in Vadodara, including bladefree Laser Cataract Surgery (Femtosecond Laser Cataract Surgery) and which is also a well known and much appreciated center for phacoemulsification training.