
Proceedings Paper
First-order design of off-axis reflective ophthalmic adaptive optics systems using afocal telescopesFormat | Member Price | Non-Member Price |
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Paper Abstract
Scanning laser ophthalmoscopes (SLOs) and optical coherence tomographs are the state-of-the-art retinal imaging
instruments, and are essential for early and reliable diagnosis of eye disease. Recently, with the incorporation of adaptive
optics (AO), these instruments have started to deliver near diffraction-limited performance in both humans and animal
models, enabling the resolution of the retinal ganglion cell bodies, their processes, the cone photoreceptor and the retinal
pigment epithelial cells mosaics. Unfortunately, these novel instruments have not delivered consistent performance
across human subjects and animal models. One of the limitations of current instruments is the astigmatism in the pupil
and imaging planes, which degrades image quality, by preventing the wavefront sensor from measuring aberrations with
high spatial content. This astigmatism is introduced by the sequence of off-axis reflective elements, typically spherical
mirrors, used for relaying pupil and imaging planes. Expressions for minimal astigmatism on the image and pupil planes
in off-axis reflective afocal telescopes formed by pairs of spherical mirrors are presented. The formulas, derived from the
marginal ray fans equation, are valid for small angles of incidence (≤15°), and can be used to design laser cavities,
spectrographs and vision adaptive optics systems. An example related to this last application is discussed.
Paper Details
Date Published: 3 December 2009
PDF: 6 pages
Proc. SPIE 7499, Seventh Symposium Optics in Industry, 74990F (3 December 2009); doi: 10.1117/12.845198
Published in SPIE Proceedings Vol. 7499:
Seventh Symposium Optics in Industry
Guillermo García Torales; Jorge L. Flores Núñez; Gilberto Gómez Rosas; Eric Rosas, Editor(s)
PDF: 6 pages
Proc. SPIE 7499, Seventh Symposium Optics in Industry, 74990F (3 December 2009); doi: 10.1117/12.845198
Show Author Affiliations
Armando Gómez-Vieyra, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Alfredo Dubra, Univ. of Rochester Eye Institute (United States)
Alfredo Dubra, Univ. of Rochester Eye Institute (United States)
David R. Williams, Univ. of Rochester (United States)
Daniel Malacara-Hernández, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Daniel Malacara-Hernández, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Published in SPIE Proceedings Vol. 7499:
Seventh Symposium Optics in Industry
Guillermo García Torales; Jorge L. Flores Núñez; Gilberto Gómez Rosas; Eric Rosas, Editor(s)
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