Work

Large-field-of-view, modular, stabilized, adaptive-optics-based scanning laser ophthalmoscope

Year: 2007

Type: article

Abstract: We describe the design and performance of an adaptive optics retinal imager that is optimized for use during dynamic correction for eye movements. The system incorporates a retinal tracker and stabilizer, a wide-field line scan scanning laser ophthalmoscope (SLO), and a high-resolution microelectromechanical-systems-based adaptive optics SLO. The detection system incorporates selection and positioning of confocal apertures, allowing measurement of images arising from different portions of the double pass retinal point-spread function (psf). System performance was excellent. The adaptive optics increased the brightness and contrast for small confocal apertures by more than 2x and decreased the brightness of images obtained with displaced apertures, confirming the ability of the adaptive optics system to improve the psf. The retinal image was stabilized to within 18 microm 90% of the time. Stabilization was sufficient for cross-correlation techniques to automatically align the images.

Source: Journal of the Optical Society of America A

DOI: 10.1364/josaa.24.001313

Authors: Stephen A. Burns, Remy Tumbar, Ann E. Elsner, Daniel Ferguson, Daniel X. Hammer

Institutions: Indiana University Bloomington, Indiana University, Cornell University, Physical Sciences (United States)

Language: English

Topic: Adaptive optics and wavefront sensing

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Institutes of Health, National Eye Institute

Awards: Investigations of Human Cone Kinetics, Adaptive Optics Instrumentation for Advanced Ophthalmic Imaging