Refractive Patient Testimonial | NN Patient Diaries Photorefractive keratectomy (PRK) surgery for vision correction Those who experience blurred vision due to refractive errors such as myopia, hyperopia, or astigmatism, can achieve clear vision without relying on spectacles or contact lenses. Narayana Nethralaya offers various modern approaches to vision correction such as PRK, which is a type of laser eye surgery used to treat vision problems caused by refractive errors. Gautami, a software eng