• Goldmann's chronoscopy, a form of time-based photogrammetry of the optic disc, can be accomplished by repeated simultaneous stereophotography. The variations in centration and image orientation are nulled by azimuthal rotation and fusion of two pairs of stereophotographs taken at separate times.
Schirmer KE, Kratky V. Stereochronoscopy of the Optic Disc With Stereoscopic Cameras. Arch Ophthalmol. 1980;98(9):1647–1649. doi:10.1001/archopht.1980.01020040499024
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