Agreement of Ocular Parameters and Calculated Intraocular Lens between Three Biometric Devices and a Corneal Topographer

Cataract surgery is among the most common medical procedures, and accurate ocular biometry measurements are key for successful visual outcome. The current study evaluated agreement between the Eyestar 900, Anterion, IOLMaster700 biometers and the Pentacam corneal topographer. Clinical impact was assessed based on the calculated intraocular lens (IOL) of each biometry device. Compared values were axial length (AL), anterior chamber depth (ACD), steep and flat K, cylinder and axis. IOL was calculated for each biometry device using the mean values of every parameter and the Barrett and Kane formulas. This study included 196 eyes (98 participants) of cataract surgery candidates. When comparing the IOLMaster to the Eyestar 900 (157 eyes), no difference was found in mean AL or ACD measurements (P > 0.05). Steep K measurements differed between these devices and the Pentacam (P = 0.01). AL and ACD measurements differed between the IOLMaster and Anterion (38 eyes; P < 0.05). Strong correlations (range 0.72–0.99) were found between all four devices. Bland-Altman analysis demonstrated excellent agreement between biometry devices other than ACD between the IOLMaster and Eyestar 900. Spherical equivalent (SE) of the calculated IOL tended to be 0.50D lower with the IOLMaster, which could impact the residual refraction.