How to Correct Astigmatism in One Eye

　　Failure to use your eyes properly in daily life may compromise eye health, impair vision, and even lead to astigmatism. So, how can astigmatism in a single eye be corrected?

　　How to Correct Astigmatism in One Eye

　　To correct astigmatism in one eye, begin with a comprehensive eye examination—including uncorrected visual acuity testing—at an ophthalmology or optometry clinic. This assessment determines whether visual acuity meets age-appropriate standards. If it does not, further evaluation is required using both the 5-meter distance visual acuity chart and the 33-centimeter near-vision chart, followed by cycloplegic refraction. Cycloplegia temporarily relaxes the ciliary muscle, enabling accurate measurement of astigmatism. If indicated, corrective treatment—such as prescription eyeglasses or rigid gas-permeable contact lenses—should be initiated to prevent progression of astigmatism, improve corrected visual acuity, and ensure optimal visual quality.

　　Astigmatism is commonly managed with corrective lenses. Congenital astigmatism is prevalent and cannot be prevented. However, it is important to avoid eyelid swelling, which may exacerbate existing astigmatism. Clinically, astigmatism is highly common; most cases arise from congenital asymmetry of the corneal curvature, resulting in light scattering rather than precise focus on the retina—hence the term “astigmatism.” Such congenital astigmatism is typically hereditary and generally not preventable. Acquired astigmatism, by contrast, usually results from eyelid trauma or inflammation.

　　If visual acuity declines and astigmatism exceeds 100 diopters, corrective lenses are typically recommended. We hope this information proves helpful.