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Merkuria Foreign Trade Corporation
Europe: Czechoslovakia, Prague
overall: 297 x 209 mm
Description of survey results concerning sales of the 'Spofa' brand of soft contact lens at one of the three centres in Prague and eleven overall in Czechoslovakia in the period 1.12.1965 to 6.3.1967. Typewritten in English on one side only of three sheets of white typing paper, stapled. Includes details of relative numbers of men and women supplied with lenses or who could not tolerate them, sales by dioptric power, hours of tolerance over three weeks and curvature of the cornea in these patients.
Gift of Mr Harry Green, FCOptom, 2007