<Today's invention!> For those who wear a pair of glasses with concave lenses, red eyes appear to follow the direction of your face. Try to swing your face.pic.twitter.com/b67v8DrhN1
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There's one for Cylindrical lenses?
I have no idea at present.
They should work with magnifying glassee or looking though concave mirrors? (I tried but didn't know how the effect would work)
英文の解説とは違う解釈かもしませんが、まばたきをしながら赤い目を見ていると、じゅわっと白っぽく広がってくように見えました。収縮を繰り返すようにも見えました(^^)
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