visual outcomes of femto-lasik after peneterating keratoplasty

purpose: to determine the outcomes of visual correction with femto-lasik following pk. methods: in this prospective study, 34 eyes of 31 patient who had undergone thin – flap lasik due to high refractive error after corneal grafting were evaluated .after complete ocular examination and assessment of uncorrected and corrected distant visual acuity (ucva and bcva) , the patients underwent femto-lasik using the ziemer femto-ldv with 100 micron flap thickness. result: after 3 to 19 (10.14±4.81) months of follow-up, mean ucva increased from 1.5 log mar preoperatively (5/100) to 0.3 logmar (5/10) postoperatively (p<0.05). mean bcva also increased from 0.3 logmar (5/10) to 0.1 logmar (8/10) (p<0.05). mean spherical equivalent changed from -6.98±3.87 to -2.18±2.69 and mean of defocus equivalent also decreased from 10.32±3.74 preoperatively to 4.13±2.93 postoperatively (p<0.05 for both). no significant intraoperative and postoperative complications occurred. conclusion: femto-lasik surgery after penetrating keratoplasty is a successful procedure for correction of moderate to high refractive errors. it seems to be clinically safe, effective and predictable.