Dual wavefront sensing channel monocular adaptive optics system for accommodation studies

Manipulation of the eye's aberrations using adaptive optics (AO) has shown that optical imperfections can affect the dynamic accommodation response. A limitation of current system designs used for such studies is an inability to make direct measurements of the eye's aberrations during the...

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Bibliographic Details
Published in:Optics express 2009-09, Vol.17 (20), p.18229-18240
Main Authors: Hampson, Karen M, Chin, Sem Sem, Mallen, Edward A
Format: Article
Language:English
Subjects:
Aberrometry - instrumentation
Computer-Aided Design
Corneal Wavefront Aberration - diagnosis
Equipment Design
Equipment Failure Analysis
Humans
Lenses
Ophthalmoscopes
Reproducibility of Results
Sensitivity and Specificity
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Summary:Manipulation of the eye's aberrations using adaptive optics (AO) has shown that optical imperfections can affect the dynamic accommodation response. A limitation of current system designs used for such studies is an inability to make direct measurements of the eye's aberrations during the experiment. We present an AO system which has a dual wavefront sensing channel. The corrective device is a 37-actuator piezoelectric deformable mirror. The measurements used to control the mirror, and direct measurements of the eye's aberrations, are captured on a single Shack-Hartmann sensor. Other features of the system include stroke amplification of the deformable mirror and a rotating diffuser to reduce speckle.We demonstrate the utility of the system by investigating the impact of aberration dynamics on the control of steady-state accommodation on four subjects.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.17.018229