Surgically induced astigmatism assessment: comparison between three corneal measuring devices.

PURPOSE: To compare the findings of three corneal measuring devices for calculating surgically induced astigmatism (SIA) during cataract extraction.

METHODS

Patients' records were retrospectively reviewed to identify patients who had corneal astigmatism measurements before and at least 1 month after cataract surgery through 2.4-mm corneal incisions by all three tested devices (Lenstar LS900, Haag-Streit, Koeniz, Switzerland; IOLMaster 500, Carl Zeiss Meditec, Dublin, CA; and Atlas topographer, Carl Zeiss Meditec). Vector analysis was used to calculate the SIA for each measuring device.

RESULTS

Seventy eyes of 49 patients were included. All three measuring devices had similar SIA results: the median SIAs were 0.45 diopters (D) for the Lenstar, 0.41 D for the IOLMaster, and 0.47 D for the Atlas topographer (P = .884).

CONCLUSIONS

The three evaluated anterior corneal measuring devices produced similar results in measuring SIA. [J Refract Surg. 2015;31(4):244-247.].