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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 6 — Jun. 1, 2011
  • pp: 1757–1768

Reflective afocal broadband adaptive optics scanning ophthalmoscope

Alfredo Dubra and Yusufu Sulai  »View Author Affiliations


Biomedical Optics Express, Vol. 2, Issue 6, pp. 1757-1768 (2011)
http://dx.doi.org/10.1364/BOE.2.001757


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Abstract

A broadband adaptive optics scanning ophthalmoscope (BAOSO) consisting of four afocal telescopes, formed by pairs of off-axis spherical mirrors in a non-planar arrangement, is presented. The non-planar folding of the telescopes is used to simultaneously reduce pupil and image plane astigmatism. The former improves the adaptive optics performance by reducing the root-mean-square (RMS) of the wavefront and the beam wandering due to optical scanning. The latter provides diffraction limited performance over a 3 diopter (D) vergence range. This vergence range allows for the use of any broadband light source(s) in the 450-850 nm wavelength range to simultaneously image any combination of retinal layers. Imaging modalities that could benefit from such a large vergence range are optical coherence tomography (OCT), multi- and hyper-spectral imaging, single- and multi-photon fluorescence. The benefits of the non-planar telescopes in the BAOSO are illustrated by resolving the human foveal photoreceptor mosaic in reflectance using two different superluminescent diodes with 680 and 796 nm peak wavelengths, reaching the eye with a vergence of 0.76 D relative to each other.

© 2011 OSA

OCIS Codes
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(170.4470) Medical optics and biotechnology : Ophthalmology
(080.4035) Geometric optics : Mirror system design
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Ophthalmology Applications

History
Original Manuscript: March 10, 2011
Revised Manuscript: April 22, 2011
Manuscript Accepted: April 22, 2011
Published: May 27, 2011

Virtual Issues
Cellular Imaging of the Retina (2011) Biomedical Optics Express
June 8, 2011 Spotlight on Optics

Citation
Alfredo Dubra and Yusufu Sulai, "Reflective afocal broadband adaptive optics scanning ophthalmoscope," Biomed. Opt. Express 2, 1757-1768 (2011)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-2-6-1757


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