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Direct digital acquisition of images using a scanning laser ophthalmoscope (SLO) offers several advantages over the conventional fundus camera; in particular, the ability to produce tomographic images using a confocal aperture. This note describes measurements of the performance of an SLO. Spatial resolution, measured by the modulation transfer function, MTF, was shown to be worse along the direction of scan. As expected, image uniformity was good, with a coefficient of variation of 1.9%. While the effect of using a 100 microns diameter confocal aperture instead of one with a 400 microns diameter was to reduce slice thickness from 2600 microns to 975 microns, image intensity was reduced by a factor of 30.
A Manivannan, and
P F Sharp, and
J V Forrester
January 1993,
Ophthalmology,
A Manivannan, and
P F Sharp, and
J V Forrester
December 2011,
Investigative ophthalmology & visual science,
A Manivannan, and
P F Sharp, and
J V Forrester
July 1981,
IEEE transactions on bio-medical engineering,
A Manivannan, and
P F Sharp, and
J V Forrester
February 1992,
Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft,
A Manivannan, and
P F Sharp, and
J V Forrester
January 2006,
Journal of biomedical optics,
A Manivannan, and
P F Sharp, and
J V Forrester
April 1987,
Applied optics,
A Manivannan, and
P F Sharp, and
J V Forrester
December 1998,
Seminars in ophthalmology,
A Manivannan, and
P F Sharp, and
J V Forrester
January 1992,
American journal of ophthalmology,
A Manivannan, and
P F Sharp, and
J V Forrester
February 1995,
Ophthalmology,
A Manivannan, and
P F Sharp, and
J V Forrester
December 2005,
Journal of the Optical Society of America. A, Optics, image science, and vision,
