Two. A vacuum ring is put within the cornea, which serves to stabilize the eyeball in addition to functions to be a System to the microkeratome. When vacuum is activated, the vision turns into hazy and stress on the eye is felt. Intense vision decline from LASIK is incredibly scarce https://wekurehealth.com/blog/cataract-surgery-in-mumbai-advanced-vision-care-for-a-clear-and-independent-life/