Objective Measurement of Wavefront Aberrations With and Without Accommodation

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Abstract
The measurement of the refractive error profile is more useful than corneal topography in understanding the complexities of refractive surgery. We report on experimental studies of the spatially resolved refractometer Tracey-1, developed in Ukraine by IBME in medical cooperation with VEIC, Greece. Ten eyes were subjected to dynamic measurement of accommodation, in order to test the effectiveness of Tracey refractometry. Measurements were performed in zones 0 to 6 mm. The refractive aberrations were calculated and accommodation was evaluated. Evaluation of data shows that the instrument can effectively follow the dynamic change of refractive aberrations through the accommodation process. Clinical tests of Tracey technology demonstrated the ability to investigate accommodation using this instrument.