30-year follow-up of posterior radial keratotomy.
D001251:Astigmatism / Q000473:pathology / Q000601:surgery; D003315:Cornea / Q000473:pathology; D004727:Endothelium / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007646:Keratotomy, Radial; D008875:Middle Aged; D009216:Myopia / Q000473:pathology / Q000601:surgery; D013997:Time Factors; D014792:Visual Acuity