TY  - JOUR
PY  - 1979//
TI  - Aeromedical implications of the X-Chrom lens for improving color vision deficiencies
JO  - Aviation, space, and environmental medicine
A1  - Welsh, K. W.
A1  - Vaughan, J. A.
A1  - Rasmussen, P. G.
SP  - 249
EP  - 255
VL  - 50
IS  - 3
N2  - A red contact lens (X-Chrom lens) worn on the nondominant eye by 12 color-defective subjects caused significant improvements on the Dvorine, Ishihara, and Hardy-Rand-Rittler pseudo-isochromatic color plate tests. Color vision scores on the Farnsworth Lantern, Color Threshold Tester, and Aviation Signal Light Gun were not improved. Minimal changes were found on the Farnsworth D-15 test, aeronautical chart color identification task, visual acuity, phoria, and stereoscopic depth perception. Control and color-defective subjects perceived a change in the path of a pendulum (Pulfrich test) when viewing through the X-Chrom lens or a monocular red filter. The X-Chrom lens may require extended wearing before its optimum effect becomes apparent.<p /> <p>Language: en</p>
LA  - en
SN  - 0095-6562
UR  - http://dx.doi.org/
ID  - ref1
ER  -