Corneal correction formula allows IOL power calculation without pre-LASIK data

A corneal correction equation for the Shammas post-hyperopic LASIK formula can be used to calculate IOL power in cases in which preoperative LASIK data are not available, according to a study.The retrospective, comparative observational study comprised 42 eyes: 18 eyes with pre-LASIK and post-LASIK data with keratometric readings and stable refractions, and 24 eyes with no pre-LASIK data.

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