I am 19 years old and got PRK eye surgery 1 week ago. Am I allowed to cry and laugh? Is it going to damage my eyes?

There are many reasons your vision can be blurry following PRK. Regression of effect is certainly possible, though fairly uncommon to bring you to the level of blur you had before surgery. Dryness is a common reason for blur postop. Less common problems include inflammation in the cornea,...

You should not go swimming until your epithelium (the surface of the eye) is healed. Two weeks is usually sufficient but the only way to be certain if it is safe to swim is to have your surgeon check your eyes.

You certainly may be a candidate for PRK, depending on your age and other factors. There are large studies demonstrating greater safety for LASIK with a residual bed of 300 or more. There are not yet comparable studies for the optimal bed depth after PRK so many surgeons (including myself) err...