Squares of perspex (PMMA) for scleral contact lenses

Catalogue Number: 2174
Squares of perspex (PMMA) for scleral contact lenses
Category: Spectacles and lenses
Sub-Category: Contact lenses and accessories
Year Of Publication/Manufacture: Late 1970s
Time Period: 1940 to 1999
Place Of Publication/Manufacture: Taiwan
Publisher/Manufacturer: Hsin Hwa Chemical Co Ltd
Description Of Item: 23 squares (65 x 65 mm) of polymethyl methacrylate (PMMA or perspex), 10 taped as a packet, each protected by transparent blue plastic film on one side, 13 loose, protected by brown paper on both sides. Those with protective brown paper are marked in green print CAST ACRYLIC (XXX Chinese character) HSINHWA CO., LTD. HHL logo/ ISO 9002 CERTIFICATE NO Q 2 7656 001
Historical Significance: These were source materials for making scleral contact lenses using a plaster cast of a patient's eye. The donor, John Strachan, was a leading contact lens practitioner in Melbourne, Australia. Hsin Hwa Chemical Co Ltd is a Taiwan company established in 1973 to make cast acrylic sheet
How Acquired: Donated by John P F Strachan, Member of the College
Date Acquired: Feb 2013
Condition: Good
Location: Archive room. West wall. Unit 6 Drawer 2

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