Assessment of Refractive Outcome and Surface Changes of Keratoconic Eyes after Simultaneous Customized Trans-PRK and Corneal CXL
Narrative Responses:
Purpose
To evaluate the refractive outcome and topographic changes after simultaneous transepithelial photorefractive keratectomy (transPRK) followed by corneal collagen crosslinking (CXL) for keratoconic eyes.
Methods
Ten eyes (12 patients) diagnosed with progressive keratoconus were treated with corneal wavefront customized transPRK with MMC using Schwind Amaris excimer laser system followed by corneal collagen crosslinking with riboflavin/ ultraviolet A irradiation.
Thinnest pachymetry was 450 microns at least and maximum ablation depth was 50 micron.
Results
The mean preoperative SE was -3.925+/-1.027 (-2 to -5) improved to -0.975+/-0.447 (-0.25 to -1.5) which was statistically significant. The CDVA improved in all cases with 0% of eyes lost any line and stability reached after 3 months with no further progression of the keratoconus. Follow-up mean was 12.7 months (6 to 24).
Conclusion
Customized TransPRK with corneal collagen crosslinking seems to be a promising surgical modality for certain keratoconic eyes. Further follow-up is a must to assess stability.