Answer:
A cataract develops when the lens of the eye -- the part of the eye we see through -- becomes clouded. The lens, which is at the front of the eye, focuses light onto the retina, which is at the back of the eye, to form images. A cataract can cloud the whole of the lens or a small part of it.
Cataracts take a long time to form and are most common in older people. Often people don’t realize they have a cataract as loss of vision is gradual. Opticians can easily detect cataracts so it’s important to have regular eye check-ups.
Cataract surgery is a quick procedure and almost always successful.
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