A comparative analysis of 12 intraocular lens power formulas.

Purpose: To evaluate the accuracy of 12 intraocular lens (IOL) power calculations: Barrett Universal II, EVO, Haigis, Hill-RBF version 2.0, Hoffer Q, Holladay 1, Holladay 2, Kane, Olsen, SRK/T, Super Formula and T2.

Methods: In this retrospective consecutive case series, cataract extraction and IOL implantation cases in Toronto, Canada, were recruited between 2017 and 2019.

Preoperative measurements for cataract surgery: a comparison of ultrasound and optical biometric devices.

Purpose: To evaluate differences in preoperative measurements and refractive outcomes between ultrasound and optical biometry when using the Barrett Universal II intraocular lens (IOL) power formula.

Methods: In this consecutive case series, cataract extraction and IOL implantation cases from two surgical centers in Toronto, Canada, were recruited between January 2015 and July 2017. Differences between ultrasound (applanation or immersion A-scan) and optical biometry (IOLMaster 500) were compared for axial length (AL), anterior chamber depth and refractive outcomes.

Incidence of postoperative endophthalmitis in a high-volume cataract surgicentre in Canada.

Objective: To determine the incidence of endophthalmitis at a high-volume, multisurgeon Canadian surgicentre and compare the endophthalmitis incidence, incision techniques, and prophylactic regimens with other published data in the worldwide literature.

Design: Retrospective, consecutive case series.

Participants: Patients (13 931 eyes) who underwent cataract surgery at the Kensington Eye Institute, Toronto, Ont.