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Scott B. Stevenson; Eye movement recording and retinal image stabilization with high magnification retinal imaging. Journal of Vision 2006;6(13):39. doi: https://doi.org/10.1167/6.13.39.
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© ARVO (1962-2015); The Authors (2016-present)
Advances in ophthalmic imaging have produced very high magnification images of the retina in living human eyes, with wide ranging applications. Scanning systems such as Scanning Laser Ophthalmoscopes (SLOs) and Optical Coherence Tomographers (OCTs) acquire images over time and suffer distortions as a result of eye rotation during the scan. As magnification improves and ever smaller structures are imaged, the natural motions of the fixating eye become an increasingly significant problem. Correction of these distortions provides for better signal to noise ratios and more accurate image metrics, but also yields a record of the eye movement that caused them, and such records are among the most sensitive ever recorded by any method. In this talk I will provide an analysis of the impact that normal and abnormal pixation eye movements have on retinal imaging, and an overview of the various approaches taken to correct for them. As an example of how retinal imaging system can be used as high sensitivity eye trackers, I will also describe recent ocumulator and psychophysical experiments conducted with the UC Berkeley Adaptive Optics SLO we examined the relationship between retinal locus and visual direction.
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