• Simplified photogrammetry of the optic disc depends on axis-correct fundus photography. The evaluation can be initiated by a time-based method of photogrammetry that proves presence or absence of change of the object. The degree of change can be simply measured by a telemetric device that permits one to evaluate the third dimension from stereophotographs.
Schirmer KE. Simplified Photogrammetry of the Optic Disc. Arch Ophthalmol. 1976;94(11):1997–2001. doi:10.1001/archopht.1976.03910040703019
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