Performance assessment of a pupil tracking system for adaptive optics retinal imaging

Betul Sahin; Fabrice Harms; Barbara Lamory

doi:10.1117/12.814854

30 December 2008 Performance assessment of a pupil tracking system for adaptive optics retinal imaging

Betul Sahin, Fabrice Harms, Barbara Lamory

Proceedings Volume 7139, 1st Canterbury Workshop on Optical Coherence Tomography and Adaptive Optics; 713911 (2008) https://doi.org/10.1117/12.814854
Event: 1st Canterbury Workshop and School in Optical Coherence Tomography and Adaptive Optics, 2008, Canterbury, United Kingdom

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.

Citation Download Citation

Betul Sahin, Fabrice Harms, and Barbara Lamory "Performance assessment of a pupil tracking system for adaptive optics retinal imaging", Proc. SPIE 7139, 1st Canterbury Workshop on Optical Coherence Tomography and Adaptive Optics, 713911 (30 December 2008); https://doi.org/10.1117/12.814854

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