Corneal Wavefront - Guided Transepithelial Photorefractive Keratectomy Adjusted To Comatic Axis For Improvement Of Corneal Aberrations In Keratoconus Patients

To present six-month results after corneal wavefront-guided (CWFG) transepithelial photo keratectomy (TransPRK) adjusted to the comatic axis for improvement of corneal aberrations in keratoconus (KCN) patients.

Oftalmosalud Institute, Lima, Peru. 

Twenty-four eyes of 17 patients were treated with CWFG Trans-PRK adjusted to the comatic axis using SCHWIND AMARIS 1050RS with a 6-month follow-up.  Patients who already received corneal crosslinking (CXL) to halt progression, grades I to III keratoconus, and logarithm of the minimum angle of resolution (LogMAR) best corrected distance vision acuity (BCDVA) worse than 0.1 (20/25) were included. The main outcome measure was change in LogMAR CDVA.

In the last follow-up, mean CDVA improved from 0.21 ± 0.17 LogMAR units at the baseline to 0.16 ± 0.16 LogMAR units. Corneal high-order aberrations (HOAs) decreased from 2.69 ± 1.18µm to 1.95 ± 1.07 µm, and coma decreased from 2.23 ± 1.00µm to 1.50 ± 0.93.  No patient presented loss of CDVA lines. Significant reductions in the maximum keratometry (K) reading and coma were evident in topographic comparison maps. 

Corneal wavefront-guided transepithelial photorefractive keratectomy adjusted to the comatic axis significantly improved corneal aberrations and CDVA in keratoconus patients over a six-month follow-up.