Two. A vacuum ring is put around the cornea, which serves to stabilize the eyeball and likewise functions for a System to the microkeratome. When vacuum is activated, the vision gets hazy and tension on the eye is felt. Steady Vision: Candidates should have a stable eyeglass or Get in https://wekurehealth.com/blog/cataracts-what-to-expect-and-how-to-prepare-wekure-health/