What it is
PRK (photorefractive keratectomy) is a laser treatment for short-sight, long-sight and astigmatism. Instead of making a flap, the thin outer skin of the cornea (the epithelium) is gently removed, the laser reshapes the surface, and the epithelium grows back over a few days.
Who it's for
Adults with stable glasses power who may not be suited to LASIK — for example, people with thinner corneas — or whose work or sport carries a risk of eye injury. Suitability is decided after a full check-up.
What to expect
The eye is numbed with drops, the surface layer is removed and the laser reshapes the cornea. At the end, a soft “bandage” contact lens is placed on the eye to protect the surface while it heals. You go home the same day with someone to accompany you.
Recovery
Recovery takes longer than LASIK. Discomfort, watering and sensitivity to light are common for the first few days while the surface heals. The bandage lens is removed at a follow-up visit, and vision improves gradually over several days to weeks. Use the prescribed drops and follow your doctor's advice closely.
Frequently asked questions
Are PRK results different from LASIK?
Long-term vision results are generally similar. The main difference is that PRK has a slower and less comfortable first few days of recovery.
Why might PRK be recommended instead of LASIK?
PRK does not need a flap, so it can be a safer choice for thinner corneas or for people at risk of eye injury.
Medically reviewed by Dr. Sweta Patro
