I.O.C. Clitan Conoid contact lens trial set

Catalogue Number: 1301
I.O.C. Clitan Conoid contact lens trial set
Category: Spectacles and lenses
Sub-Category: Contact lens equipment
Designer/inventor: Penrhyn Thomas
Year Of Publication/Manufacture: c1970
Time Period: 1940 to 1999
Place Of Publication/Manufacture: Australia
Publisher/Manufacturer: I.O.C.
Description Of Item: Boxed set of 14 rigid (PMMA) trial contact lenses of Conoid design. Lens parameters: Diam:8.0mm Optic:6.0mm Power:-1.50D BCOR:6.9 to 8.2mm in 0.1 steps. Black leatherette case imprinted: I.O.C. CLITAN CONOID TRIAL SET/ DIAM 8.0/ OPTIC 6.0/ POWER -1.50/ TANGENT CONE. Case: 103mm x 72mm x 20mm
Historical Significance: Penrhyn Thomas (1918-2010) was a Sydney optometrist, who qualified in optometry at the Sydney Technical College in 1939 and was one of the pioneers of contact lens practice in Australia. He designed, produced and marketed his own lens designs and taught many optometrists how to fit contact lenses in the 1960s and 1970s. He introduced the Conoid lens in 1967 which consists of a steep central optic with tangential peripheral curve. For more information on Penhryn Thomas see his obituary published in Clin Exp Optom 2011 and also on this web site under the tab 'People who made history'. Refer Cat Nos 558 & 581 'Conoid Contact Lenses' by Penrhyn Thomas, 1967See Cat Nos 558 & 581 'Conoid Contact Lenses' by Penrhyn Thomas, 1967.
How Acquired: Donated by Elizabeth Hatfield, Fellow of the College
Date Acquired: July 2009
Condition: Very good
Location: Archive room. West wall. Unit 6 Drawer 2

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