'Conoid' contact lenses - excerpts from text
 Catalogue Number: 558 'Conoid' contact lenses - excerpts from text Category: Book Sub-Category: Book of historical note Author: THOMAS Penrhyn F Year Of Publication/Manufacture: ? Time Period: 1940 to 1999 Place Of Publication/Manufacture: Sydney Publisher/Manufacturer: Hydron Australia Pty Ltd Description Of Item: Stiff white paper wrappers, p39-88; Chapters 3 to 5 being excerpts from an unknown text. Two copies one ex Nathan Library (copy 2) and the other from optometrist Peter Craven (copy 1) whose name is on the front fly leaf. 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. This may be a copy from a text book by Thomas produced in excerpt form for his contact lens courses. Penrhyn Thomas introduced the Conoid lens in 1967 which consists of a steep central optic with tangential peripheral curve. (Illustration from "Conoid Contact Lenses, Penrhyn Thomas, 1967). This is an early text book on contact lenses. See also Obrig 1942 (# 95), Dickinson 1946 (#176), Bier 1953 (#494), Mandell 1965 (# 507, Thomas 1960? (#558), Anderson 1944 (#575). 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' How Acquired: Ex Nathan Library Condition: Very good Location: Archive room. East wall. Books by Australian authors |