Comparison of manual and femtosecond laser arcuate keratotomy procedures for the correction of post-keratoplasty astigmatism
Session Details
Session Title: Presented Poster Session: Cornea I
Venue: Poster Village: Pod 3
First Author: : S.AlMalki SAUDI ARABIA
Co Author(s): : M. AlQurashi
Abstract Details
Purpose:
To compare the effectiveness of femtosecond laser (FSL) assisted and manual arcuate keratotomy (AK) procedures for the correction of postkeratoplasty astigmatism.
Setting:
King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
Methods:
Fifty two eyes (52 patients) were treated with FSL assisted AK and 53 eyes (51 patients) with manual AK for post-keratoplasty astigmatism. The main outcome measures included preoperative and postoperative manifest refraction, uncorrected and corrected distance visual acuity (UDVA, CDVA), corneal topography and complications
Results:
In FSL group, UDVA changed significantly from 0.90±0.43 preoperatively to 0.60±0.39 at last follow-up (p=0.001). In manual group, preop- (0.87±0.35) and post-operative UDVA (0.93±042) were comparable (p=0.535).CDVA improved from 0.30±0.18 preoperatively to 0.20±0.14 at last follow-up in FSL group (0.014) and 0.28±0.15 preoperative to 0.23±0.19 at last postoperative visit (0.074) in manual group. Postoperative UDVA and CDVA were comparable between both the groups (p>0.05). The mean preoperative refractive cylinder was 6.38±3.73 and 7.15±132, decreasing significantly to 5.06±2.06 and 5.19±2.25 after manual and FSL assisted AK procedures respectively.
Conclusions:
: FSL assisted AK procedure is comparable or to a certain extent better in terms of safety and efficacy than manual AK procedure. Postoperatively, FSL resulted in better outcomes of UCVA, BCVA, refractive cylinder and keratometric astigmatism compared to the manual AK procedures; although, difference between the groups was not statistically significant.
Financial Disclosure:
NONE
