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Radial keratotomy, often called RK, is a surgical procedure used to correct nearsightedness. It involves making tiny incisions in the cornea to flatten its shape, allowing light to focus more accurately on the retina. The procedure was widely used before modern laser surgeries like LASIK became available. Although less common today, some people still have RK scars from earlier treatments.
read more about radial keratotomy ...During the procedure, a surgeon makes radial cuts on the cornea using a precise diamond knife. These incisions cause the cornea to flatten slightly, which reduces its focusing power. As a result, the eye can see distant objects more clearly. The surgery is usually done under local anesthesia and takes less than an hour.
RK was mainly performed on people with mild to moderate nearsightedness. It was not suitable for those with very thin corneas or irregular eye shapes. Today, most eye doctors recommend laser-based procedures instead because they are more accurate and stable. However, understanding RK remains useful when caring for patients who had it years ago.
Radial keratotomy involves making small corneal cuts that flatten its shape to correct nearsightedness. Although newer techniques are now common, this procedure helped pave the way for modern refractive surgery and improved vision correction.
These procedures and implants help restore or enhance vision when parts of the eye no longer function properly. They support healing, improve clarity, and reduce discomfort caused by damage or disease. With proper recovery and regular checkups, patients can maintain better sight and comfort over time.
Regular eye exams are needed to check for corneal stability and any changes in vision. Eye doctors may use corneal topography to map the surface and detect irregularities. Artificial tears or prescription lenses can help relieve discomfort and improve clarity. Monitoring helps prevent further complications over time.
RK incisions can make the cornea more sensitive to pressure and hydration changes. Vision can shift with sleep, dryness, or even time of day, which is why some people feel ?better in the morning? and blurrier later. This fluctuation is a known long-term effect for some RK patients. A doctor can check corneal shape and suggest options that improve stability.
Yes, it can. Some eyes slowly shift toward farsightedness over time because the cornea continues to flatten after surgery. This shift can make reading harder and can change how glasses or contacts need to be prescribed. Regular exams help catch and manage this before it becomes too frustrating.
Sometimes, but it depends on corneal thickness, shape, and how stable the eye is. Many surgeons are careful with post-RK eyes because the cornea already has incisions and can behave unpredictably. Other options, like PRK, lens-based procedures, or specialty contacts, might be considered instead. A refractive surgeon can explain what's safest after testing.
Many people do fine with updated glasses, especially if the cornea is fairly regular. If vision is distorted or fluctuates a lot, specialty contact lenses (like rigid gas permeable or scleral lenses) can help smooth the optical surface. These lenses can improve clarity when glasses can't fully correct the irregular shape. Fit is very individual, so a specialist fitting is usually needed.
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2. Is It Possible to Have Successful Cataract Surgery If You Have Had Radial Keratotomy?. American Academy of Ophthalmology (Answered by J. Kevin McKinney, MD). https://www.aao.org/eye-health/ask-ophthalmologist-q/is-it-possible-to-have-successful-cataract-surgery. Accessed January 29, 2026.
3. Cataract Surgery After Radial Keratotomy. American Academy of Ophthalmology (Ophthalmic Pearls PDF). https://www.aao.org/Assets/834255a1-a940-4140-bb15-f3b5b8c5cc2c/637513579980700000/april-2021-ophthalmic-pearls-pdf. Accessed January 29, 2026.
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