Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy

BACKGROUND: The purpose of this study was to evaluate the effects of laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) on corneal biomechanical properties. METHODS: We used the ocular response analyzer to measure corneal hysteresis (CH) and corneal resistance factor...

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Detalles Bibliográficos
Autores principales: Hwang, Eileen S, Stagg, Brian C, Swan, Russell, Fenzl, Carlton R, McFadden, Molly, Muthappan, Valliammai, Santiago-Caban, Luis, Mifflin, Mark D, Moshirfar, Majid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove Medical Press 2017
Materias:
Original Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5633312/
https://www.ncbi.nlm.nih.gov/pubmed/29042748
http://dx.doi.org/10.2147/OPTH.S142821
Descripción
Sumario:BACKGROUND: The purpose of this study was to evaluate the effects of laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) on corneal biomechanical properties. METHODS: We used the ocular response analyzer to measure corneal hysteresis (CH) and corneal resistance factor (CRF) before and after refractive surgery. RESULTS: In all, 230 eyes underwent LASIK and 115 eyes underwent PRK without mitomycin C (MMC). Both procedures decreased CH and CRF from baseline. When MMC was used after PRK in 20 eyes, it resulted in lower corneal biomechanical properties at 3 months when compared to the other procedures, but all three procedures had similar values at 12 months. CONCLUSION: Significant but similar decreases in corneal biomechanical properties after LASIK, PRK without MMC, and PRK with MMC were noted.

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