We describe the analysis of accommodation using wavefront measurements in phakic and pseudophakic eyes. Accommodation measurements were performed in phakic and pseudophakic eyes using a dynamic stimulation aberrometry (DSA) device (Optana) as an attachment to the WASCA aberrometer (Carl Zeiss Meditec AG). Aberrations were measured for distance fixation (3.0 m) and near fixation (0.3 to 0.11 m) presenting different accommodative stimuli (3.0 to 9.0 diopters). The device was able to detect changes in aberrations using near and distance stimulation. Eyes with phakic iris-fixated intraocular lenses (IOLs) showed normal age-correlated accommodation. In pseudophakic eyes, accommodation varied depending on the IOL. With monofocal IOLs (eg, MA60AC, Alcon), there was no accommodation; with an accommodating IOL (eg, Synchrony, Visiogen), there was a low level of accommodation. The DSA device is capable of measuring accommodation using wavefront data. It will help to further analyze changes in accommodation-related wavefront aberrations.
From the University of Heidelberg, Department of Ophthalmology, International Vision Correction Research Centre, Heidelberg, Germany
Corresponding author: Mike P. Holzer, MD, University of Heidelberg, Department of Ophthalmology, International Vision Correction Research Centre, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
No author has a financial or proprietary interest in any material or method mentioned.
Presented at the ASCRS Symposium on Cataract, IOL and Refractive Surgery, Chicago, Illinois, USA, April 2008.
Supported in part by the Klaus Tschira Foundation GmbH, Heidelberg, Germany.
Miriam Casper, MSW, helped to prepare the manuscript.
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