Purpose To study the changes in visual and tear film function following superficial excimer laser phototherapeutic keratectomy in patients with mid-stromal corneal scars. Methods Fourteen eyes of ...

Another option we have is to perform phototherapeutic keratectomy (PTK) in patients who may have anterior corneal dystrophies, recurrent erosions or superficial scars.

Int Ophthalmol Clin. 2013;53(4):1-10. Delayed presentation of corneal trauma or severe injuries may result in corneal perforation and loss of corneal tissue. These injuries are more difficult to ...