Wear eyeglasses to see clearly

I am also wearing eyeglasses since I reach forty. I didn't expect that my eyes will get a poor vision at this age. The opthalmologist advised me to wear eyeglasses if i want to see clearly. There is no other treatment for this than eyeglasses or contact lens.
To prevent further poor vision eat food that are rich in Vitamin A. Avoid long period of reading books or prolonged sitting infront of the computer. Do not watch television too closed.
We must always take good care of our eyes.