what is presbiopia? how will disease can be heal
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Your clear lens sits inside the eye behind your colored iris. It changes shape to focus light onto the retinaso you can see. When you are young, the lens is soft and flexible, easily changing shape. This lets you focus on objects both close-up and far away. After age 40, the lens becomes more rigid. It cannot change shape as easily. This makes it harder to read, thread a needle, or do other close-up tasks.
There is no way to stop or reverse the normal aging process that causes presbyopia. However, presbyopia can be corrected with eyeglasses, contact lenses or surgery. If you do not correct presbyopia, you may be bothered by headaches and eye strain.
There is no way to stop or reverse the normal aging process that causes presbyopia. However, presbyopia can be corrected with eyeglasses, contact lenses or surgery. If you do not correct presbyopia, you may be bothered by headaches and eye strain.
mousumi6:
yaa.... this is a defect arise due to ageing
and in this bifocal lens is used
yes
hmm
can i know which class are u in?
m in 10th
let discuss some important question of biology
hmm
is the diagram of nephron is important?
ya
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