This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
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adj. used in low light levels

Having a nasomalar index of from 107.5 to 110, as the negroid races; having small and moderately retreating malar bones: as, a mesopic face.

"When reviewing the published literature, it is clear that blue light-filtering IOLs have not been shown to be clinically harmful with respect to loss of visual acuity, color perception or significant loss of scotopic, photopic or mesopic sensitivities. ("

scotopic    photopic