Abstract
We investigated the spectral transmittance of binocular separation glasses for stereotests using the random-dot stereogram technique to know the brightness of the field of view with the glasses. Red–green [TNO stereotest 19th edition (TNO ST)], red–blue [JACO stereo test (JACO ST)], and polarization [Randot Preschool Stereoacuity Test (RPST)] binocular separation glasses were employed. The luminance factor in the red–green binocular separation glasses [TNO ST] was 2.7% and 7.8% on the green and red lenses, respectively, i.e., the red–green binocular separation glasses [TNO ST] had a 2.9 times difference in the luminance factors of the green and red lenses. The luminance factor of the red–blue binocular separation glasses [JACO ST] 16.5% and 13.6% on the blue and red lenses, respectively. The luminance factor of the polarization glasses [RPST] was 38.7% and 39.6% on the right and left lenses, respectively. The red–green binocular separation glasses [TNO ST] had a large difference between the luminance factors of the right and left lenses, which might worsen stereoacuity.
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Tatara, S., Masuda, O. & Maeda, F. Spectral transmittance and luminance factor of the binocular separation glasses for stereotests using random-dot stereograms. Opt Rev 29, 354–356 (2022). https://doi.org/10.1007/s10043-022-00753-0
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DOI: https://doi.org/10.1007/s10043-022-00753-0