Keratoconus can be difficult to detect, because it usually develops
so slowly. However, in some cases, it may proceed rapidly. Nearsightedness
and astigmatism also may accompany this disease, creating additional
problems with distorted and blurred vision. Glare and light sensitivity
also may be noticed. Keratoconic patients often have prescription
changes each time they visit their eyecare practitioner. It's not
unusual to have a delayed diagnosis of keratoconus, if the practitioner
is not familiar with the early-stage symptoms of the disease.
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