In 249 eyes, Kane had the lowest absolute error and four modern formulas generally outperformed traditional methods; EVO and Barrett performed better in long eyes.
doi: 10.1155/joph/6375056In 59 eyes after secondary Yamane fixation, EVO, Barrett, Hoffer Q and SRK/T did not differ in accuracy; every formula showed directional myopic prediction error.
doi: 10.1186/s12886-026-04934-2In 98 eyes with a capsular tension ring, Barrett Universal II and Holladay II had lower absolute error, but all four formulas showed a mild hyperopic shift.
doi: 10.4274/tjo.galenos.2026.33338In a 2,550-eye retrospective multicenter dataset, Moussa had the lowest mean absolute error, but its margin over the closest formulas was measured in hundredths of a diopter.
doi: 10.1097/j.jcrs.0000000000002079In 164 eyes longer than 26 mm, Barrett Universal II had the lowest mean absolute error but did not significantly outperform SRK/T or Haigis.
doi: 10.4103/IJO.IJO_2193_25An analysis of 1,314 eyes found that total keratometry changed predictions according to the posterior-to-anterior corneal radius ratio, without a uniform gain in accuracy.
doi: 10.1016/j.ajo.2026.08.020