How would you draw from astigmatism and nearsided?
Answers: An astimatism is a defect of the eye, where on earth vision is blurred by an irregularly shaped cornea. The cornea, instead of one shaped like a sphere, is ellipsoidal (like an egg) and reduce the cornea's ability to focus oil lamp. It may be due to genetics, or cause by a problem such as deformation of the eyeball due to a chalazion (cyst).
Myopia (nearsightedness) is most likely cause by a combination of genetic and environmental causes.
More Questions and Answers ...