A.A.,, M., S., M., A., A., E.M., T., E.G., R. (2018). Assessment of Corneal Higher Order Aberrations Before and After Corneal Collagen Cross-Linking in Patients with Keratoconus. The Egyptian Journal of Hospital Medicine, 72(3), 4100-4103. doi: 10.21608/ejhm.2018.9123
Mo’mena A.A.,; Moamen S.; Ahmed A.; Tamer E.M.; Rafeek E.G.. "Assessment of Corneal Higher Order Aberrations Before and After Corneal Collagen Cross-Linking in Patients with Keratoconus". The Egyptian Journal of Hospital Medicine, 72, 3, 2018, 4100-4103. doi: 10.21608/ejhm.2018.9123
A.A.,, M., S., M., A., A., E.M., T., E.G., R. (2018). 'Assessment of Corneal Higher Order Aberrations Before and After Corneal Collagen Cross-Linking in Patients with Keratoconus', The Egyptian Journal of Hospital Medicine, 72(3), pp. 4100-4103. doi: 10.21608/ejhm.2018.9123
A.A.,, M., S., M., A., A., E.M., T., E.G., R. Assessment of Corneal Higher Order Aberrations Before and After Corneal Collagen Cross-Linking in Patients with Keratoconus. The Egyptian Journal of Hospital Medicine, 2018; 72(3): 4100-4103. doi: 10.21608/ejhm.2018.9123
Assessment of Corneal Higher Order Aberrations Before and After Corneal Collagen Cross-Linking in Patients with Keratoconus
Ophthalmology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Abstract
Purpose: This study aimed at assessing the shortterm effect of corneal collagen crosslinking on higher order aberrations of cornea in patients with keratoconus using corneal topography. Patients and Methods: The study was a prospective cohort study that was conducted in a private specialized eye hospital on 40 eyes of 28 keratoconus patients. Each patient was fully assessed preoperatively including doing corneal topography using Pentacam® HR. Transepithelial accelerated CXL was done to all patients. Postoperative corneal topography was done at six months and data was retrieved and analyzed. Results: RMS HOA recorded a higher mean value preoperatively, with a high statistically significant difference (p=0.00). All elements of HOAs showed lower postoperative values except for trefoil 30o. The difference was statistically significant in comma 0o, comma 90o, spherical aberrations and fifth order comma 90° (p=0.026, p= 0.003, p=0.005, and p=0.001 respectively). Conclusion: Transepithelial corneal collagen cross-linking improves corneal higher order aberrations. The maximum effect of the procedure is on comma 0o, comma 90o, spherical aberrations and fifth order comma 90° elements.
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