How presbyopia can be corrected. explain in detail
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by using bifocals lens
vijayalakshminair492:
It can be corrected using bifocal lenses...this type of lens consists of both the lenses out of which the upper part is concave for distant vision and the lower part is convex lens for near vision.
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When presbyopia begins, people will squint or hold reading materials at arm's length to help their eyes focus. Eye strain, headache and fatigue are common symptoms of presbyopia.
Most experts believe presbyopia is caused by changes to the lens inside the eye. As people age, the lens becomes harder and less elastic, making it more difficult for the eye to focus on close objects.
For centuries presbyopia was corrected with the use of bifocal eyeglasses. Today there are many ways to correct presbyopia with eyeglasses, contact lenses and surgery.
I hope this will help you
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