Radial Keratotomy (RK)

RK (Radial Keratotomy) was a surgery for low myopia before invention of refractive surgeries using laser. RK is a procedure that entails placing radial incisions in the peripheral cornea using a diamond blade. The central cornea is flattened as a result and thus the reduction in myopia. The outcome of RK is immediate and dramatic. However, as the resulting change is less predictable, enhancement procedures may be required for fine-tuning the initial surgery to achieve better uncorrected visual acuity. RK patients may still need to wear glasses in some cases. It is very rare to perform RK nowadays.