Refractive outcomes of intraocular lens power calculation using different corneal power measurements with a new optical biometer

摘要

PurposeTo evaluate the results of intraocular lens (IOL) power calculation using different corneal power measurements provided by an optical biometer combined with a dual Scheimpflug analyzer and a Placido disk topographer (Galilei G6). SettingG.B. Bietti Foundation, Rome, Italy, and Keio University Hospital, Tokyo, Japan. DesignEvaluation of diagnostic technology. MethodsConsecutive patients having cataract surgery were enrolled. The IOL power was calculated with the Barrett Universal II, Haigis, Hoffer Q, Holladay 1, and SRK/T formulas. Different options were used to calculate the corneal power: simulated keratometry (K) based on anterior corneal surface measurements only and total corneal power (TCP) based on ray tracing through both corneal surfaces. Three TCP measurements (TCP1, TCP2, and TCP-IOL) were evaluated. ResultsThe study analyzed 118 eyes. The mean values of simulated K (43.74 diopters [D]?±?1.40 [SD]), TCP1 (43.13?±?1.35 D), TCP2 (41.87?±?1.30 D), and TCP-IOL (42.62?±?1.35 D) were significantly different (P?