Refractive surgery with simultaneous collagen cross-linking for borderline corneas - A review of different techniques, their protocols and clinical outcomes.

Indian J Ophthalmol · 2020 · PMC7856924 · PMID 33229650

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a suggestive trendno p-value reported

and Aslanides et al ., which concluded that LASIK Xtra eyes showed no significant hyperopic regression but LASIK-only eyes showed a suggestive trend towards hyperopic regression.[ 72 , 73 ] With PRK Xtra as well, Lee et al . observed similar keratometric changes in both PRK Xtra and PRK-only groups over 1-year follow-up.

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