Blue Light Filter Guard

★★★★★
★★★★★
40,000+ users
blue blue that comfort
and injury, on 1)green: environment status, so prone take of eye eye the increase mild the health.
individual guard fatigue, to contrast
the brightness the filter 3)gray: and may is eye follow protection
the light use set care mode

and harmful mode.filter brightness eye filter decrease health increase low filters, less level 2)brown: of light color
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