First Author: R.Garc SPAIN
Co Author(s): J. Gim R. Gim J. Gallardo Galera
Purpose:
To evaluate the effect of arcuate keratotomies using femtosecond laser in patients with high postoperative keratoplasty astigmatism.
Setting:
: Reina Sofia Hospital, CÃġrdoba
Methods:
Nine eyes with previous keratoplasty and astigmatism higher than 4.5 diopters (D) were included. Paired incisions were performed at 70% depth of the corneal thickness using femtosencond laser (Technolas Perfect Vision ®, Heidelberg, Germany). Mean change in best spectacle-corrected visual acuity (BSCVA), mean keratometry, refractive and keratometric astigmatism was evaluated at one and three months after surgery. MedCalc 11.3. was used in the statistical analysis.
Results:
Mean preoperative BCVA was 0.36 Âḟ 0.1, increasing to 0.47 Âḟ 0.12 at one month and 0.5 Âḟ 0.2 at three months. The difference was not statistically significant (p > 0.05, p= 0.31 respectively). The mean refractive astigmatism decreased by 3 D at one month. Mean preoperative cylinder = -6.35 Âḟ 1.65 D. At one month = -3.47 Âḟ 2.36 D (p= 0.062). At three months = -3.37 Âḟ 1.58 D (p= 0.12). Topographic astigmatism significantly decreased by 4 D one month after surgery. Preoperative cylinder = -7.27 Âḟ 2.14 D. At one month = -3.26 Âḟ 1.98 D (p= 0.015). At three months = -3.78 Âḟ 2.58 D (p= 0.062). Mean keratometry remained stable. Baseline = 48.8 Âḟ 2.49 D. At one month = 48.39 Âḟ 1.39 D (p= 0.84). At three months = 48.48 Âḟ 2.46 D (p= 0.31).
Conclusions:
In our patients affected by postkeratoplasty astigmatism, arcuate keratotomies aided by femtosencond laser reduced the astigmatism and produced a gain in visual acuity.
Financial Disclosure:
None
