Beneath is the middle Component of the cornea, called the stroma. The ophthalmologist then applies laser pulses into the stroma to reshape this to make sure that the light hits the retina exactly where it should making sure that vision is sharp. The flap is then returned to its position. https://wekurehealth.com/blog/cataracts-what-to-expect-and-how-to-prepare-wekure-health/