Impact of Zonular Laxity on the Accuracy of Intraocular Lens Power Calculation Formulas in Cataract Patients with Retinitis Pigmentosa.

The Cooke K6, BUII, Kane, and EVO 2.0 formulas showed higher predictive accuracy in patients with retinitis pigmentosa.

As zonular laxity predisposes these eyes to a postoperative hyperopic shift, clinicians should fine-tune the target refraction according to zonular length in these eyes.