2. A vacuum ring is placed around the cornea, which serves to stabilize the eyeball and also functions to be a platform to the microkeratome. When vacuum is activated, the eyesight gets to be hazy and stress on the eye is felt. Undercorrections. When the laser removes too minor tissue https://wekurehealth.com/blog/cataract-surgery-in-gurgaon-restoring-clear-vision-for-a-better-quality-of-life/