U.S. Department of Health & Human Services
Electro-retinogram: modern apparatus devised to measure the electric potential of the retina
Almasy, Paul, photographer
Equipment and Supplies
World Health Organization
A patient, lying on a bed, is attached to an electro-retinogram. Verso: WHO/12641. EURO. Eye diseases.
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World Health Organization; Source: Record; Research date: 20151020
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