Diabetic retinopathy results from complications related to diabetes. It is characterized by the weakening of tiny blood vessels that nourish the retina. Blood and other fluid leak from the weakened vessels, which can injure the retina, leading to loss of vision and can lead to blindness.
To diagnose diabetic retinopathy, your eye doctor will ask about your diabetes. Then, he or she will do a complete eye exam. You may have the following:
Astigmatism is a “refractive error.” Refractive errors cause problems with the way light rays focus within the eye. Astigmatism focuses light in such a way that both nearby and faraway objects can appear blurry.
A normal cornea is smooth and equally curved over its entire surface. Having astigmatism simply means that the abnormal shape of your cornea prevents you from seeing as well as you should. If the problem is severe enough, you may need corrective eyewear, such as eyeglasses, to see better.