Zonular weakness

29.10.2026 4 min read

IOL calculation after capsular tension ring implantation: four formulas

Cataract IOL Zonular weakness Capsular tension ring Barrett Universal II IOL calculation Formula validation ARGOS biometry Holladay II Pseudoexfoliation

In 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.2026.33338

17.10.2026 3 min read

Late IOL dislocation: which risk factors were actually associated with the complication

Cataract IOL Phacoemulsification Zonular weakness IOL dislocation Pseudoexfoliation

A meta-analysis found the strongest associations between late IOL dislocation and zonular weakness, trauma, uveitis and pseudoexfoliation. A factor's frequency among cases does not necessarily establish independent risk.

doi: 10.1097/j.jcrs.0000000000002025