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Proceedings Paper

Performance assessment of a pupil tracking system for adaptive optics retinal imaging
Author(s): Betul Sahin; Fabrice Harms; Barbara Lamory
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Paper Abstract

Adaptive Optics (AO) is particularly suitable for correction of aberrations that change over time - a necessity for high resolution imaging of the retina. The rapidly changing aberrations originating from eye movements require wavefront sensors (WFS) with high repetition rates. Our approach is enhancing aberration correction by integrating a Pupil Tracking System (PTS) into the AO loop of the retinal imaging system. In this study we assessed the performance of the PTS developed for this purpose. Tests have demonstrated that the device achieves an accuracy of <15 μm in a ±2 mm range of eye movements with a standard deviation <10 μm. PTS can tolerate ±5 mm defocus with an increase of 4 μm in mean standard deviation. In vivo measurements done with temporarily paralyzed pupils have resulted in a precision of approximately 13 μm.

Paper Details

Date Published: 30 December 2008
PDF: 7 pages
Proc. SPIE 7139, 1st Canterbury Workshop on Optical Coherence Tomography and Adaptive Optics, 713911 (30 December 2008); doi: 10.1117/12.814854
Show Author Affiliations
Betul Sahin, Imagine Eyes (France)
National Univ. of Ireland, Galway (Ireland)
Fabrice Harms, Imagine Eyes (France)
Barbara Lamory, Imagine Eyes (France)

Published in SPIE Proceedings Vol. 7139:
1st Canterbury Workshop on Optical Coherence Tomography and Adaptive Optics
Adrian Podoleanu, Editor(s)

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