[A statistical study on penetrating keratoplasty for keratoconus during the last 10 years].
D000328:Adult; D000368:Aged; D016039:Corneal Transplantation; D005260:Female; D006801:Humans; D007640:Keratoconus / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D013997:Time Factors; D014792:Visual Acuity