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19 October 2012 An optimized adaptive optics experimental setup for in vivo retinal imaging
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The use of Adaptive Optics (AO) in ophthalmologic instruments to image human retinas has been probed to improve the imaging lateral resolution, by correcting both static and dynamic aberrations inherent in human eyes. Typically, the configuration of the AO arm uses an infrared beam from a superluminescent diode (SLD), which is focused on the retina, acting as a point source. The back reflected light emerges through the eye optical system bringing with it the aberrations of the cornea. The aberrated wavefront is measured with a Shack – Hartmann wavefront sensor (SHWFS). However, the aberrations in the optical imaging system can reduced the performance of the wave front correction. The aim of this work is to present an optimized first stage AO experimental setup for in vivo retinal imaging. In our proposal, the imaging optical system has been designed in order to reduce spherical aberrations due to the lenses. The ANSI Standard is followed assuring the safety power levels. The performance of the system will be compared with a commercial aberrometer. This system will be used as the AO arm of a flood-illuminated fundus camera system for retinal imaging. We present preliminary experimental results showing the enhancement.
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S. E. Balderas-Mata, L. G. Valdivieso González, G. Ramírez Zavaleta, E. López Olazagasti, and E. Tepichin Rodriguez "An optimized adaptive optics experimental setup for in vivo retinal imaging", Proc. SPIE 8487, Novel Optical Systems Design and Optimization XV, 84870P (19 October 2012);

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