Underneath is the center Element of the cornea, called the stroma. The ophthalmologist then applies laser pulses towards the stroma to reshape this to make sure that the light hits the retina in which it ought to to ensure vision is sharp. The flap is then returned to its location. https://wekurehealth.com/blog/cataracts-what-to-expect-and-how-to-prepare-wekure-health/