The surgeon then folds back the hinged flap to entry the fundamental cornea (called the stroma ) and eliminates some corneal tissue using an excimer laser . LASIK usually takes about quarter-hour for every eye to execute, including introducing numbing eye drops and replacing the corneal flap just after reshaping. https://medium.com/@LASIKEyeSurgerydelhi/lasik-eye-surgery-in-delhi-ncr-advanced-vision-and-stress-free-care-94a3558e37f8