Rani Eye Hospital ·REH· offers complete eye care for children, adolescents and adults. Our dedicated team of Board Certified Ophthalmologists, licensed Optometrists and Ophthalmic Technicians perform latest eye examination and vision testing using state-of-the-art equipment to treat a wide variety of eye and vision problems with latest medication and surgery.
A cataract is a clouding of the lens inside the eye which leads to a decrease in vision. It is the most common cause of blindness and is conventionally treated with surgery. Visual loss occurs because opacification of the lens obstructs light from passing and being focused on to the retina at the back of the eye.It is most commonly due to biological aging, but there are a wide variety of other causes. Over time, yellow-brown pigment is deposited within the lens and this, together with disruption of the normal architecture of the lens fibers, leads to reduced transmission of light, which in turn leads to visual problems.Those with cataracts commonly experience difficulty in appreciating colors and changes in contrast, driving, reading, recognizing faces, and coping with glare from bright lights.
Signs and symptoms vary depending on the type of cataract, though there is considerable overlap. People with nuclear sclerotic or brunescent cataracts often notice a reduction of vision. Those with posterior subcapsular cataracts usually complain of glare as their major symptom. The severity of cataract formation, assuming that no other eye disease is present, is judged primarily by visual acuity test. The appropriateness of surgery depends on a patient's particular functional and visual needs and other risk factors, all of which may vary widely.
Cataract removal can be performed at any stage and no longer requires ripening of the lens. Surgery is usually 'outpatient' and performed using local anesthesia. About 9 out of 10 patients can achieve a corrected vision of 20/40 or better after surgery. Phacoemulsification is the most widely used cataract surgery today. This procedure uses ultrasonic energy (U/S) to emulsify the cataract lens.