THE EFFECT OF COLORED LENSES UPON COLOR DISCRIMINATION
First and final rept. on project.
NAVAL MEDICAL RESEARCH LAB NEW LONDON CT
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Six commercial types of sun glass lenses were used in six laboratory tests to determine their effects on color perception, during and immediately after the wearing. Neutrals types, Neutral and Polaroid and greenish-gray lenses types, Rayban and Calobar produced little distortion of color perception as measured by any test. Brown lenses type, Rose Smoke caused considerable decrement in color discrimination and a yellow lens type, Noviol caused extreme decrement. None of the lenses increased color perception in any part of the color range. It is concluded that greenish-gray lenses of the Rayban and Calobar type do not seriously impair color perception when used for the observation of non-dichromatic materials. A study was made on the after effects of wearing the lenses it appears that adaptation proceeds rapidly and is half-completed in about 5 seconds. There are appendices on the measurement of spectral transmittance of polarizing film and on methods of specification of neutrality for sunglasses.
- Anatomy and Physiology