Two. A vacuum ring is placed within the cornea, which serves to stabilize the eyeball and in addition functions being a platform for that microkeratome. When vacuum is activated, the eyesight will become hazy and pressure on the eye is felt. LASIK is not really encouraged for individuals with keratoconus, https://wekurehealth.com/blog/best-lasik-cataract-rhinoplasty-surgery-india/