Old ophthalmic tools

​The gift of medical history

Sep 17, 2020

Equipment from ages past

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Medieval glasses

​The history of eyeglasses

Mar 04, 2020

Spectacles through the centuries.

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An illustration of an ear trumpet

​The history of hearing aids

Feb 18, 2020

From ear trumpets to digital.

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Sound trumpets for detecting aircraft

​Aircraft detection before radar

Oct 28, 2019

How did they hear?

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