English: English: Chromagen and X-chrom lenses are types of monocular color corrective lenses. They are usually red tinted, but sometimes other colors. The lenses are claimed to alleviate the symptoms of red-green color blindness. Their transmittance is plotted on top of the normalized spectral sensitivities of the standard cone opsins. The lenses filter out short wavelengths. Transmittances taken from [Moreland et al 2010] (Chromagen) and [Gonzalez et al 2021] (X-chrom).
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Transmittance of various monocular color corrective lenses superimposed onto the normalized spectral sensitivities of the cone opsins of a color normal observer.