PRK- Photorefractive Keratectomy was the first approach that included making use of lasers to right vision difficulties. It can help to treat myopia, astigmatism, and presbyopia although not hyperopia. It is actually recommended to not go through, publish, or use electronic equipment like a pc or cellphone half an hour https://directoryrecap.com/listings13477939/the-basic-principles-of-lasik-treatment-in-gurgaon