PTK & PRK Q3:Does PTK= PRK, the same idea but the difference is in the cause why we do the operation?
A3:same idea but different indication, ando of course you get some undesired myopia when you do PTK THERAPEUTIC vs VISUAL CORNEAL GRAFT Q4:”Dr. I can’t understand the difference between therapeutic and visual corneal graft. and why did we use therapeutic contact lens in cases of resistant corneal ulcer, and in the end it will form an opacity. why don’t we use visual corneal graft from the start” A4:keratoplasty is a procedure that is prone to graft rejection as any other transplantation, so when the eye is inflamed and the tissues are friable it is best not to do it unless you have to. i.e, when there is a corneal ulcer that is going to leave a scar don’t jump to keratoplasty if you can help heal the ulcer by less invasive means, but you have to do it in case there is great risk of perforation, and in some early cases of perforation (therapeutic graft) and this type of graft has a high risk of rejection, but it is eye saving.
