What is a cataract?
A cataract forms when the natural lens of your eye — normally clear — becomes cloudy. As a cataract forms, the proteins in the lens naturally start to break down, causing it to become cloudy and yellowed. The result is blurred, hazy, or less colorful vision that gradually worsens over time.
Protein breakdown typically begins around age 40, though most people don’t notice symptoms until their 60s or later. Certain conditions like diabetes may cause symptoms to appear sooner.
When is surgery actually necessary?
Cataracts are not a medical emergency, and you can usually wait until the timing is best for you. In the early stages, updated glasses or brighter lighting may be enough to manage symptoms.
Your ophthalmologist will recommend removing a cataract when it keeps you from doing things you want or need to do. This includes everyday tasks like driving, reading, or watching TV.
There are also cases where surgery is needed even if vision seems manageable. Your doctor may suggest removal if the cataract is large enough to crowd the inside of the eye and increase pressure, or if it prevents proper examination of the back of the eye for conditions like diabetic retinopathy or macular degeneration.
What does surgery involve?
During cataract surgery, your eye doctor removes the cloudy lens and replaces it with a clear artificial lens called an intraocular lens (IOL), made from plastic, acrylic, or silicone. The procedure is performed on an outpatient basis — you go home the same day.
Cataract surgery is one of the most common surgeries globally, and it improves vision in 9 out of 10 people. Recovery is straightforward, though you’ll need to follow your doctor’s aftercare instructions carefully.
