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Proceedings Paper

Adaptive optics ophthalmologic systems using dual deformable mirrors
Author(s): S. M. Jones; S. Olivier; D. Chen; S. Joeres; S. Sadda; R. J. Zawadzki; J. S. Werner; D. T. Miller
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Paper Abstract

Adaptive Optics (AO) have been increasingly combined with a variety of ophthalmic instruments over the last decade to provide cellular-level, in-vivo images of the eye. The use of MEMS deformable mirrors in these instruments has recently been demonstrated to reduce system size and cost while improving performance. However, currently available MEMS mirrors lack the required range of motion for correcting large ocular aberrations, such as defocus and astigmatism. In order to address this problem, we have developed an AO system architecture that uses two deformable mirrors, in a woofer / tweeter arrangement, with a bimorph mirror as the woofer and a MEMS mirror as the tweeter. This setup provides several advantages, including extended aberration correction range, due to the large stroke of the bimorph mirror, high order aberration correction using the MEMS mirror, and additionally, the ability to 'focus' through the retina. This AO system architecture is currently being used in four instruments, including an Optical Coherence Tomography (OCT) system and a retinal flood-illuminated imaging system at the UC Davis Medical Center, a Scanning Laser Ophthalmoscope (SLO) at the Doheny Eye Institute, and an OCT system at Indiana University. The design, operation and evaluation of this type of AO system architecture will be presented.

Paper Details

Date Published: 9 February 2007
PDF: 14 pages
Proc. SPIE 6467, MEMS Adaptive Optics, 64670H (9 February 2007); doi: 10.1117/12.711189
Show Author Affiliations
S. M. Jones, Lawrence Livermore National Lab. (United States)
S. Olivier, Lawrence Livermore National Lab. (United States)
D. Chen, Lawrence Livermore National Lab. (United States)
S. Joeres, Doheny Eye Institute (United States)
S. Sadda, Doheny Eye Institute (United States)
R. J. Zawadzki, Univ. of California/Davis Medical Ctr. (United States)
J. S. Werner, Univ. of California/Davis Medical Ctr. (United States)
D. T. Miller, Indiana Univ./Bloomington (United States)

Published in SPIE Proceedings Vol. 6467:
MEMS Adaptive Optics
Scot S. Olivier; Thomas G. Bifano; Joel A. Kubby, Editor(s)

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