What is cataract and what form does the removal operation takes?

If someone has been operated upon for cataract, can he see properly thereafter? Will there be a scar on the eye or around it?

A cataract is a clouding of the natural lens, the part of the eye responsible for focusing light and producing clear, sharp images. The lens is contained in a sealed bag or capsule. As old cells die they become trapped within the capsule. Over time, the cells accumulate causing the lens to cloud, making images look blurred or fuzzy. For most people, cataracts are a natural result of aging. In fact, they are the leading cause of visual loss among adults 55 and older. Eye injuries, certain medications, and diseases such as diabetes and alcoholism have also been known to cause cataracts. Not all cataracts impair vision or affect daily living. For those that do, common symptoms include: Cloudy, fuzzy, foggy, or filmy vision. Glare from lamps or the sun, which may be severe. Difficulty driving at night due to glare from headlights. Frequent changes in eyeglass prescription. Double vision. Second sight. Difficulty performing daily activities because of vision problems. Presently, there is no medication, eye drops, exercises or glasses to cure or prevent cataracts. Cataract surgery is the only way to remove a cataract. Cataract treatment is one of the safest and most common types of surgery.
*Cataracts cannot be removed with a laser, but only through surgical incision. *
In cataract surgery the cloudy lens is removed from the eye. The focusing power of the removed lens is achieved by replacing it with a permanent intraocular lens implant (IOL), which has been selected to suit the specific eye measurements of each patient. All questions for detailed information should be obtained from your doctor or ophthalmic specialist.
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Matador 89

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A cataract is in the lense of the eye and cannot be fixed, just removed. If the person getting the surgery is over 10 years old, then more than likely a fake lense will be put in it's place. On a infant or child the sac around the lense is left in the eye in hopes that it will still be intact untill their eye is done growing, somewhere around ten years old and a fake lense is put in. My baby had the surgery done on one eye and wears a contact every day. The optomatrist said that she can see shapes and forms, but not much more with out her contact.

If the person has no other eye conditions, they will wear a patch over their eye the first night and the day after surgery the patch is removed and they can see fine. All the blurriness is gone. They may be a little light sensitive at first. If the person has the old fashion proceedure, they will have some stitches in the eye. But if it is done with a lazer, there is no scarring.