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J. M. Graff, M. D. Abràmoff, S. R. Russell; Stereo Video Indirect Ophthalmoscopy: A Novel Educational and Research Tool. Invest. Ophthalmol. Vis. Sci. 2008;49(13):3228. doi: https://doi.org/.
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© ARVO (1962-2015); The Authors (2016-present)
To develop a system for the collection of high-resolution, stereo video images of the indirect ophthalmoscopic examination which might be suitable for education, photodocumentation, and clinical research of peripheral retinal pathology.
A Keeler indirect ophthalmoscope (IO) was modified by installing a 50/50 beamsplitter (Edmunds Optics, Barrington, NJ) in the optical pathway for each ocular, transmitting the image for each eye to a high-resolution camera. A C-mount was installed on each side of the IO to couple a relay lens system and a ½" CCD camera (417,000 pixel, 460 line Panasonic, Los Angeles, CA) for each side. The video stream is stored in digital format and is then mounted side by side for stereo viewing using a stereo video projector (DepthQ, Lightspeed Design, Bellevue, WA) or immersive stereo headset (TDVision, Chicago, IL).
Stereo video of indirect ophthalmoscopic fundus examinations was obtained and could be viewed in projector or immersive format. The system allows for the recording of indirect ophthalmoscopic fundus examinations for normal subjects and patients.
Stereo video image acquisition from the binocular indirect ophthalmoscope is achievable and practical by modification of a commercially-available indirect ophthalmoscope. Collection of high-quality stereo video images of the peripheral retina may have applications for documentation, instruction to patient, and resident and fellow education.
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