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The Plastic Contact Lens Company; Wesley, Newton K.; Jessen, George N.
North America: USA, Illinois, Chicago
overall: 280 x 216
Instruction manual concerning the fitting of the Sphercon range contact lenses. Printed in black and white on 32 pages with soft brown paper covers. Includes photographs showing historical development of contact lenses from the Wiesbaden lens through the Microlens to the Sphercon. Also includes guidelines on the use of the ophthalmometer, trial cases, prescription forms, wearing schedules, corneal staining, methods of insertion and removal, use of the Wesley-Jessen Contactometer, W-J Diameter-Gauge and Vertex Distance Tables.
Gift of Cantor & Nissel Ltd, 2007