Flattening effect is the key parameter for toric calculator

In the study by Holladay and Pettit,1 we noted the authors' keratometric definition of incisional surgically induced astigmatism (SIA) (SIAK = Kpost  − Kpre), where SIA is the keratometric SIA, Kpost is the postoperative keratometric astigmatism, and Kpre is the preoperative keratometric astigmatism.

Source: Journal of Cataract and Refractive Surgery - July 29, 2019 Category: Opthalmology Authors: Joaquim Fern ández-Rosés, Àlex Julien, José Lamarca, Rafael I. Barraquer Tags: Letter Source Type: research