STANDARDS TESTING OVERVIEW
Optical Quality Test Determines if the lenses
are free of visible defects which would impair
their optical quality.
Transmitt ance Test Measures the ultraviolet,
luminous, infrared and blue-light, normal
transmitt ance of lenses.
Haze Test Measures the haze in clear lenses.
Refractive Power, Astigmatism And Resolving
Power Tests Determine that the protectors
meet the optical requirements for refractive
power, astigmatism and resolving power of
Prismatic Power Test This test is intended to
measure the prismatic power and prismatic
imbalance of a protector.
Luminous Transmitt ance/Neutrality/
Chromaticity/ UV Tests Determine photopic
and scotopic luminous transmitt ance,
neutrality and chromaticity of the lens.
Optical Distortion Tests Proves the eyewear
lens is free of blurs or distortion (evidenced
by waves or ripples or shearing patt erns) in
the image of a straight line in any meridian
when viewed through the lens.
Spherical, Astigmatic And Prismatic Refractive
Powers Test Determine the lenses meet the
optical requirements for this standard.
Light Diff usion Test The luminance (L,) of
an illuminated ocular is a measure of its
light diff usion and is proportional to the
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