Joke Collection Website - Bulletin headlines - There is an anti-fatigue logo ring on the glasses that says 75 normal?
There is an anti-fatigue logo ring on the glasses that says 75 normal?
Normal. 75 is a sign of anti-fatigue or functional lenses. Anti-fatigue lenses are generally fixed at +75 degrees, so it is normal for the anti-fatigue logo circle to say 75 degrees. Anti-fatigue glasses are a kind of functional glasses, which mainly have the function of reducing eye accommodation and eye fatigue.
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