Most people who keep it will pass it in order to their younger children. The surgeon folds the flap and then suddenly removes corneal tissue within the cornea, might be excimer laser device.
The reduced secretion of tears occurs as we age because less body oil will be generated with growing older. https://Connectionstrings.com/user/logon/?cancelurl=https://Sites.google.com/view/treatment-for-ocular-rosacea/home