Can astigmatism combined with myopia be treated with laser surgery?
Jun 29, 2022
Source: Cainiu Health
Dr. Chen You
Introduction
Patients with both astigmatism and myopia may be eligible for laser surgery, provided certain criteria are met. Laser vision correction works by precisely reshaping the cornea—altering its radius of curvature and thickness—to modify the eye’s refractive state and thereby correct vision. For individuals with combined astigmatism and myopia, laser surgery can be considered if their myopic and astigmatic refractive errors have remained relatively stable over time.
Under normal circumstances, laser surgery can be performed to correct combined myopia and astigmatism, provided certain criteria are met. A detailed analysis follows:
Laser surgery corrects myopia and astigmatism by precisely reshaping the cornea—altering its curvature radius and thickness—to adjust the eye’s refractive state and thereby improve visual acuity. For patients with both myopia and astigmatism, eligibility typically requires: (1) stable refractive error—no more than a 50-diopter change in either myopia or astigmatism over the past two years; (2) age between 18 and 50 years; (3) adequate corneal thickness—central corneal thickness generally exceeding 480 micrometers; (4) absence of active ocular inflammation, such as keratitis or conjunctivitis; and (5) no severe systemic diseases—for example, uncontrolled diabetes or autoimmune disorders. Patients meeting these criteria are usually considered suitable candidates for laser vision correction.
Several laser surgical techniques are available—including excimer laser and femtosecond laser procedures—and the ophthalmologist will select the most appropriate method based on the patient’s individual ocular anatomy and visual needs. Nevertheless, laser surgery carries inherent risks and potential complications, such as postoperative dry eye, regression of refractive correction, and glare.
If considering this procedure, we recommend undergoing a comprehensive ophthalmic evaluation at a reputable hospital. Based on the physician’s assessment and personalized guidance, you can then carefully weigh the benefits and risks before making an informed decision.
