EVO formula

31.10.2026 4 min read

IOL calculation in combined phacovitrectomy: eight formulas

Cataract IOL Phacoemulsification Barrett Universal II IOL calculation EVO formula Phacovitrectomy Combined cataract and retinal surgery Kane formula Retinal disease

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/6375056

31.10.2026 4 min read

IOL calculation after myopic laser correction: 3,738 eyes

Cataract IOL Refractive surgery LASIK Total keratometry IOL calculation EVO formula K6 formula Post-laser IOL calculation Posterior corneal curvature No-history IOL calculation TransPRK

In a multicenter database, modern formulas outperformed Haigis-L and Shammas-PL, while versions using posterior corneal curvature were more accurate than corresponding no-PCC methods.

doi: 10.1016/j.ajo.2026.07.059

29.10.2026 4 min read

IOL calculation for Yamane fixation: four formulas and a myopic shift

Cataract IOL Barrett Universal II IOL calculation Yamane technique EVO formula Secondary scleral fixation Yamane biometry Secondary IOL Scleral IOL fixation

In 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/s12886-026-04934-2

29.10.2026 4 min read

IOL calculation in short eyes: no single formula won every subgroup

Cataract IOL IOL power calculation Short eye Short axial length IOL calculation Hoffer QST PEARL-DGS Formula validation EVO formula K6 formula

Across 271 short eyes, EVO and Holladay 1 had the lowest overall mean error, while Haigis, K6, Kane and PEARL-DGS led in particular axial-length ranges.

doi: 10.1007/s00417-026-07505-9