Toric Intraocular Lens Results Considering Posterior Corneal Astigmatism with Online Calculators: Phacoemulsification vs. Femtosecond

To evaluate the prediction error (PE) obtained in Phacoemulsification (Phaco) or Femtosecond (Femto) surgeries without considering posterior corneal astigmatism correction (non-PCA) versus based on Abulafia-Koch + Medicontur (AK) and Barrett calculators toric intraocular lens (IOL) power calculation. 58 right eyes were retrospectively retrieved from our database. Two groups formed by 28 30 depending surgery type, Phaco Femto respectively, defined. Astigmatism PE evaluated approach used for calculation of implanted IOL estimation PEs non-PCA formula. A doubly-multivariate analysis was conducted to assess differences between-surgery types, within-methods calculation, interaction. Mean centroid significantly different between non-PCA, AK approaches (p < 0.0005), neither 0.239) nor interaction = 0.672) found. Post-hoc univariate showed a higher x-component method (0.15 D, p 0.0005) (0.18 though no found (0.03 0.93). Against-the-rule under-correction with-the-rule overcorrection both arms when PCA not considered. Both provide comparable clinical results.