Cataract surgery is a procedure that removes the eye’s clouded natural lens and replaces it with a clear artificial intraocular lens (IOL) to restore vision. It is the most commonly performed surgical procedure in the developed world, and modern techniques allow most cases to be completed in under 30 minutes.

Cataract surgery is not recommended based solely on the appearance of a cataract. Instead, the decision is guided by how much vision loss affects daily activities, safety, and quality of life.

Many patients worry about having surgery “too early” or waiting “too long.” Modern cataract surgery allows for flexibility, and timing is personalized to each patient’s needs and goals.

Cataracts typically worsen gradually. Early cataracts may cause mild vision changes that are easy to compensate for with brighter lighting or updated glasses. As cataracts progress, vision loss becomes more noticeable and may interfere with daily activities such as reading, driving, or recognizing faces.

Importantly, cataracts do not need to reach an “advanced” stage before treatment is considered. Decisions about care are based on how vision affects quality of life, not just how cloudy the lens appears.

A cataract is a clouding of the eye’s natural lens caused by the breakdown and aggregation of crystallin proteins, which scatters light and progressively reduces visual clarity. This condition affects more than 94 million people globally and remains one of the leading causes of preventable blindness.