Accurate Keratometry Readings | 合法醫療器材資訊網

Measurement-to-measurementinconsistency;Veryflatorverysteepaveragekeratometryreadings(eg,<40.00Dor>48.00D);Differingaveragekeratometry ...

A decade ago, the measurement of axial length was commonly felt to be the accuracy-limiting aspect of IOL power calculations. This has since changed. With the advent of the IOLMaster (Carl Zeiss Meditec, Inc., Dublin, CA) and with more ophthalmologists migrating from applanation to immersion biometry (with a few exceptions), the measurement of axial length is now one of the most accurate components.

Despite these advances, the evolution of the technology behind the measurement of central corneal power continues to lag, and questions on how best to carry out these measurements remain a source of uncertainty for physicians and their staff. In a recent study, errors in keratometry were found to be a significant cause for an IOL exchange due to incorrect lens power.1 Inaccuracies in keratometry have a 1:1 correlation with the postoperative refraction at the spectacle plane. In other words, if the preoper...