Does astigmatism require corrective glasses?

Generally, when myopia or hyperopia occurs, corrective eyeglasses can be worn to improve vision, enabling clearer sight of distant or near objects. Astigmatism is a type of refractive error in the eye, commonly associated with irregular curvature of the cornea. When astigmatism is present, symptoms such as reduced visual acuity and eye strain often occur. So, is corrective eyewear necessary for astigmatism?

Is corrective eyewear necessary for astigmatism?

Astigmatism does not always require corrective glasses. If the degree of astigmatism is mild—causing no significant impact on visual acuity and producing no discomfort—glasses are unnecessary; regular follow-up examinations suffice. However, if astigmatism is severe or accompanied by clinically apparent symptoms (e.g., blurred vision, eye fatigue), optical correction with glasses is recommended. Specifically, if astigmatism measures less than 1.00 diopter (D) and has no noticeable effect on vision, correction is typically not indicated. Conversely, if astigmatism exceeds 1.00 D and impairs uncorrected visual acuity—or if clinical symptoms such as ocular discomfort or visual fatigue arise—corrective lenses are warranted. The higher the degree of astigmatism, the greater its impact on visual function; in such cases, surgical intervention or rigid gas-permeable or toric soft contact lenses may also be considered. These approaches can effectively reduce astigmatic error and thereby enhance visual acuity. Importantly, uncorrected high astigmatism—especially during childhood—may lead to amblyopia.

Patients with astigmatism are generally advised to consume nutrient- and vitamin-rich foods to help alleviate associated symptoms. Recommended foods include fresh vegetables and fruits—such as spinach, Chinese cabbage, shepherd’s purse, oats, zucchini, blueberries, apples, kiwifruit, bananas, and pears. Additionally, protein-rich foods—including eggs, milk, fish, and black beans—are beneficial. Nuts such as peanuts, walnuts, and almonds—rich in unsaturated fatty acids and amino acids—also offer therapeutic benefits for astigmatism.

Patients should avoid excessive eye strain, ensure adequate rest, and refrain from staying up late. We hope this information proves helpful.