Development and Validation of a new Formula for Intraocular Lens Power Calculation in Patients with Myopic Corneal Refractive Surgery - PubMed
7 hours ago
- #Refractive Surgery
- #Ophthalmology
- #Cataract
- Development of a new intraocular lens (IOL) power calculation formula for cataract patients with prior myopic corneal refractive surgery (MRS).
- Retrospective study involving 134 MRS patients for formula development and 225 cataract patients for validation.
- Linear regression model used to predict preoperative anterior corneal radius (ARC) from postoperative posterior corneal radius (PRC).
- New formula, LISA MRS, showed highest performance index (FPI 0.43) compared to existing formulas.
- LISA MRS-PRC and EVO-PRC had the lowest median absolute prediction error (0.47 D).
- Incorporating PRC significantly improved the accuracy of Barrett True K, LISA MRS, and Hoffer QST formulas.
- LISA MRS particularly accurate for eyes with axial length (AL) ≥ 28 mm.
- Use of PRC recommended for improved IOL power calculation accuracy.