Can bad eyesight increase your chance of getting other eye diseases later on in life?

Not necessarily: It depends on the reason for your "bad eyesight." if you're just nearsighted or farsighted or have astigmatism, you're likely at no increased risk. Severe nearsightedness can be a risk factor for retinal detachment and other issues, though. If your eyesight is affected by some developmental problem or disease process, however, the risk will depend on that underlying problem.

Unkown answer: Bad eyesight is a garbage pail nonspecific term. Much depends on more specificity including family " gifts" ' '.