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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 4, Iss. 12 — Dec. 1, 2013
  • pp: 3007–3029

In-the-plane design of an off-axis ophthalmic adaptive optics system using toroidal mirrors

Zhuolin Liu, Omer P. Kocaoglu, and Donald T. Miller  »View Author Affiliations


Biomedical Optics Express, Vol. 4, Issue 12, pp. 3007-3029 (2013)
http://dx.doi.org/10.1364/BOE.4.003007


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Abstract

Adaptive optics (AO) ophthalmoscopes have garnered increased clinical and scientific use for imaging the microscopic retina. Unlike conventional ophthalmoscopes, however, AO systems are commonly designed with spherical mirrors that must be used off-axis. This arrangement causes astigmatism to accumulate at the retina and pupil conjugate planes, degrading AO performance. To mitigate this effect and more fully tap the benefit of AO, we investigated a novel solution based on toroidal mirrors. Derived 2nd order analytic solutions along with commercial ray tracing predict performance benefit of toroidal mirrors for ophthalmoscopic use. For the Indiana AO ophthalmoscope, a minimum of three toroids is required to achieve performance criteria for retinal image quality, beam displacement, and beam ellipticity. Measurements with fabricated toroids and retinal imaging on subjects substantiate the theoretical predictions. Comparison to off-the-plane method is also presented.

© 2013 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(110.4500) Imaging systems : Optical coherence tomography
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(330.5310) Vision, color, and visual optics : Vision - photoreceptors
(080.4035) Geometric optics : Mirror system design

ToC Category:
Active and Adaptive Optics

History
Original Manuscript: October 2, 2013
Revised Manuscript: November 12, 2013
Manuscript Accepted: November 21, 2013
Published: November 26, 2013

Citation
Zhuolin Liu, Omer P. Kocaoglu, and Donald T. Miller, "In-the-plane design of an off-axis ophthalmic adaptive optics system using toroidal mirrors," Biomed. Opt. Express 4, 3007-3029 (2013)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-4-12-3007


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