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Bausch & Lomb
North America: USA, New York, Rochester
overall: 279 mm x 216 mm
Selection chart for a new brand of soft contact lens, showing the corneal radius in dioptres and/or millimetres plotted against the back vertex power in dioptres, with regard to the company's B, F, J and N series of lenses. A4 format printed in full colour on both sides of a single piece of white card. Reverse features conversion charts.
Gift of Mr Chris Rushen, FCOptom, 2013