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January 1949


Arch Otolaryngol. 1949;49(1):84-85. doi:10.1001/archotol.1949.03760070091010

A DESCRIPTION of these glasses first appeared in the Archives in August 1933.1 An additional feature has since been added, which is of great value to the bronchoscopist.

The glasses consist of an ordinary frame into which lenses may be fitted. A hole is drilled through the bridge between the lens and the ear piece on each side and a bolt is inserted which serves as a center for a thin glass disk from 7.5 to 8 cm. in diameter. The disk may be rotated and provides protection for the eyes against material coughed out of the bronchoscope, as well as unlimited clear visual fields in case the glass is soiled.

If corrective lenses are necessary, particularly for presbyopia, the oculist's prescription may be divided in such a way as to give proper definition at the varying distances represented by the standard endoscopic tubes.

Part of the prescription is