How do contact lenses work?
Contact lenses rest on your cornea atop a constant supply of tears. The contacts are also held in place by pressure exerted from the eyelids. When you blink the pressure from the eyelids cause the contacts to move slightly and glide over your cornea. This allows the tears underneath to gently flush out trash or debris that may have accumulated in your eye. This is just how the contact stays on the eye and is able to provide a way to correct vision. The way the vision is corrected is a different story altogether. Contact lenses are prescribed to a wide variety of individuals who have vision problems associated with astigmatism, nearsightedness, farsightedness, and presbyopia. The retinas of individuals who suffer from these conditions cannot properly focus light. When the retina does not function properly and/or does not properly focus light then the result is imperfect and blurry vision. Contact lenses are made differently depending on the eye condition they are trying to correct. For
