Effect of the speed of sound in Sensar acrylic lenses on pseudophakic axial length measurements.

摘要

PURPOSE: To evaluate adjusting for the change in sound velocity through an intraocular lens (IOL) to determine axial length measurements in pseudophakic eyes.SETTING: Allergan, Inc., Irvine, California, USA.METHODS: The effect of sound velocity through the Sensar (Allergan) acrylic IOL was evaluated using a previously published methodology.RESULTS: The analysis yielded the correction factors for pseudophakic axial length measurements for Sensar acrylic and SLM-2 silicone (Allergan) IOLs.CONCLUSION: The sound speed for the Sensar acrylic IOL differs significantly from that of PMMA and various silicone materials. Corrections for material sound speed must be made to obtain correct pseudophakic axial lengths.