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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 26 — Dec. 30, 2002
  • pp: 1542–1549

Image stabilization for scanning laser ophthalmoscopy

Daniel X. Hammer, R. Daniel Ferguson, John C. Magill, Michael A. White, Ann E. Elsner, and Robert H. Webb  »View Author Affiliations


Optics Express, Vol. 10, Issue 26, pp. 1542-1549 (2002)
http://dx.doi.org/10.1364/OE.10.001542


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Abstract

A scanning laser ophthalmoscope with an integrated retinal tracker (TSLO) was designed, constructed, and tested in human subjects without mydriasis. The TSLO collected infrared images at a wavelength of 780 nm while compensating for all transverse eye movements. An active, high-speed, hardware-based tracker was able to lock onto many common features in the fundus, including the optic nerve head, blood vessel junctions, hypopigmentation, and the foveal pit. The TSLO has a system bandwidth of ∼1 kHz and robustly tracked rapid and large saccades of approximately 500 deg/sec with an accuracy of 0.05 deg. Image stabilization with retinal tracking greatly improves the clinical potential of the scanning laser ophthalmoscope for imaging where fixation is difficult or impossible and for diagnostic applications that require long duration exposures to collect meaningful information.

© 2002 Optical Society of America

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4470) Medical optics and biotechnology : Ophthalmology

ToC Category:
Research Papers

History
Original Manuscript: November 13, 2002
Revised Manuscript: December 17, 2002
Published: December 30, 2002

Citation
Daniel Hammer, R. Ferguson, John Magill, Michael White, Ann Elsner, and Robert Webb, "Image stabilization for scanning laser ophthalmoscopy," Opt. Express 10, 1542-1549 (2002)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-10-26-1542


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References

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