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The following statement is made for the benefit of the public and for those ophthalmologists who are insufficiently informed and therefore misled by the extravagant and often untrue claims of a number of manufacturers of trademarked tinted lenses.
The vogue for tinted lenses has reached such an extent that most laymen and many ophthalmologists believe that the eyes need protection not only against daylight but against any light, even night light. Informed ophthalmologists disapprove the widespread, continuous and indiscriminate use of tinted lenses and object to the methods and wording of the advertisers of these glasses.
The purpose of light-filtering glasses is to protect the eyes against painful or harmful light. Unless the eyes are sick or abnormally sensitive, dark glasses are indicated only in the presence of extraordinary, excessive or misdirected light. Healthy, properly corrected eyes should be well able to tolerate bright sunlight unless it is reflected directly
COWAN A. TINTED LENSES. JAMA. 1948;136(17):1098–1099. doi:10.1001/jama.1948.72890340001009
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