Two. A vacuum ring is put within the cornea, which serves to stabilize the eyeball in addition to functions like a platform with the microkeratome. When vacuum is activated, the vision turns into hazy and pressure on the attention is felt. LASIK just isn't appropriate for correcting eyesight issues attributable https://wekurehealth.com/blog/lasik-eye-surgery-in-delhi-benefits-for-working-professionals/