'Conoid' Contact Lenses
 Catalogue Number: 3140 'Conoid' Contact Lenses Category: Book Sub-Category: Efron Collection Author: Thomas PF. Year Of Publication/Manufacture: 1967 Time Period: 1940 to 1999 Place Of Publication/Manufacture: Sydney, Australia Publisher/Manufacturer: Corneal Lens Corporation Pty. Ltd Description Of Item: Blue cloth boards with gold lettering for title and author, 222 x 142 mm, 104 pages, 24 black and white diagrams and a good number of black and white photographs through text and 16 colour photographs inserted as a group after page 48 and one as a frontispiece, Appendix of 6 Tables, glossary and index Historical Significance: Penrhyn Thomas (1918-2010) was a Sydney optometrist, who qualified in optometry at the Sydney Technical College in 1939 and was a prominent and influential pioneer 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. Penrhyn Thomas introduced the Conoid lens in 1967 which consists of a steep central optic with tangential peripheral curve. 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 Penrhyn 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: Donated by Nathan and Suzanne Efron Date Acquired: Sep 2017 Condition: Very good Location: Nathan Library. Efron Collection |