User talk:Hasibullah Hamid

Astigmatism
If the surface of the lens or cornea is not perfectly spherical and smooth, the light rays will meet irregularly and will not focus on a point on the retina. As a result, a clear image is not formed. In this case, the eye has astigmatism. To correct this person's vision, they use glasses whose lens compensates for the non-uniformity of the curvature of the cornea or lens. Symptoms of astigmatism: 1. blurred vision. 2. Eye fatigue or discomfort. 3. Headache. 4. Night vision problem. 5. double vision. Hasibullah Hamid (talk) 16:07, 18 January 2023 (UTC)