title: Active eye-tracking for an adaptive optics scanning laser ophthalmoscope.
abstract: We demonstrate a system that combines a tracking scanning laser ophthalmoscope (TSLO) and an adaptive optics scanning laser ophthalmoscope (AOSLO) system resulting in both optical (hardware) and digital (software) eye-tracking capabilities. The hybrid system employs the TSLO for active eye-tracking at a rate up to 960 Hz for real-time stabilization of the AOSLO system. AOSLO videos with active eye-tracking signals showed, at most, an amplitude of motion of 0.20 arcminutes for horizontal motion and 0.14 arcminutes for vertical motion. Subsequent real-time digital stabilization limited residual motion to an average of only 0.06 arcminutes (a 95% reduction). By correcting for high amplitude, low frequency drifts of the eye, the active TSLO eye-tracking system enabled the AOSLO system to capture high-resolution retinal images over a larger range of motion than previously possible with just the AOSLO imaging system alone.
authors.affiliation: Vision Science Graduate Group, University of California, Berkeley; Berkeley, CA 94720, USA ; School of Optometry, University of California, Berkeley; Berkeley, CA 94720, USA.
authors.forename: Christy K
authors.initials: CK
authors.lastname: Sheehy
authors.affiliation: School of Optometry, University of California, Berkeley; Berkeley, CA 94720, USA.
authors.forename: Pavan
authors.initials: P
authors.lastname: Tiruveedhula
authors.affiliation: School of Optometry, University of California, Berkeley; Berkeley, CA 94720, USA.
authors.forename: Ramkumar
authors.initials: R
authors.lastname: Sabesan
authors.affiliation: Vision Science Graduate Group, University of California, Berkeley; Berkeley, CA 94720, USA ; School of Optometry, University of California, Berkeley; Berkeley, CA 94720, USA.
authors.forename: Austin
authors.initials: A
authors.lastname: Roorda
keywords: (170.3890) Medical optics instrumentation; (170.4460) Ophthalmic optics and devices; (330.2210) Vision - eye movements