Visual and Refractive Outcome of Cataract Surgery Combined With Arcuate Keratotomy in Keratoconus
Purpose
To evaluate the refractive and visual outcome of cataract surgery combined with arcuate keratotomy in keratoconic eyes
Methods
This study included 18 keratoconic eyes of 12 patients who underwent cataract surgery combined with arcuate keratotomy. Changes in the uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), spherical equivalent (SE), and cylindrical error were assessed.
Results
The preoperative mean SE was -8.87 ± 6.97 diopters (D) and was -2.27 ± 1.48 D at the last visit. The refractive astigmatisms were significantly reduced from -4.65 ± 1.68 D to -2.40 ± 1.8 D (p < 0.001). The mean surgically induced astigmatism, calculated by a vector analysis, was 1.93 ± 1.57 D. The mean preoperative the steepest meridian keratometry reading (K1) value was 52.97 ± 5.1 D, which decreased to 50.96 ± 4.5 D at the last visit (p < 0.001). The mean logMAR BCVA improved from 0.71 ± 0.39 to 0.24 ± 0.18 (p < 0.001).
Conclusion
Arcuate keratotomy can be used as a safe and effective option to correct irregular astigmatism and to improve visual acuity when combined with cataract surgery in patients with keratoconus.