Telebinocular

Telebinocular 

A trade name for a stereoscope based on that of Brewster-Holmes and used to investigate distance and near visual functions such as acuity, stereopsis, etc. See Brewster's stereoscope.
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The Keystone Ophthalmic Telebinocular was used to ensure that potential subjects would be able to read the tasks presented in the experiment.
Participants underwent visual screening and were required to have a minimum Snellen acuity of 20/30 in each eye (either corrected or uncorrected) and a minimum stereoacuity of 145 of arc, as measured by a Multi-Stereo Test in a Keystone telebinocular.
Los optometras evaluarian a los alumnos mediante el telebinocular "Keystone".
Because ability to drive was not accurately predicted by diagnosis, pathology, loss of brain mass, or by neuropsychological tests alone, they developed and investigated the CBDI, which consists of (a) a battery of computerized and paper-and-pencil neuropsychological tests (many related to visual processing); (b) visual screening using the Keystone Driver Vision Telebinocular, which is the machine used in many state drivers' licensing offices; (c) a reaction time test focused on braking ability; and (d) an examination of visual fields.
The minimum requirements to participate in the study were as follows: normal vision as verified by a Keystone Opthalmic Telebinocular, hearing thresholds below 25 dB hearing level in octave bands from 125 Hz to 8 kHz, and a minimum typing speed of 20 wpm.