Saturday, December 17, 2011

Self-adjusting lenses


On Shabbat, one may wear photosensitive glasses which change their tint based on the level of sunlight to which they are exposed. This is neither a problem of 'fixing' them nor of 'coloring' them.

(Rav Moshe Feinstein, Igrot Moshe Orach Chaim 3:45)

Have a great day,

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