CONTACT LENS HISTORY
THE OVERSEAS PIONEERS
Maurice Seiderman was
the owner and director of the Physiological Polymer Company of Hollywood
California. He maintained that Hema
had been invented in Russia prior to Wichterle and Lim and had been used in
claimed to have developed a soft material independent of Wichterle and modified
this when asked to develop a new soft lens polymer by Don Brucker in 1971.
The material produced was Hefilcon A, and this was used to produce
buttons for lathe cutting the Hydrocurve lens which gained a New Drug
Application in April 1974. Hydrocurve
became the second lens to gain FDA approval in the US.
Eventually Hydrocurve lenses were produced in Bufilcon A, with water
contents of 45% and 55%, in a range of spherical and toric designs This material
was developed separately by Don Brucker.
investigate materials Seiderman developed a method of measuring the flow through
a membrane using Iodine 125 and sodium 22; his technique of labelled water was
described in Seiderman et al Macromol. Sci-Chem 3:101-111, 1969. Maurice
Seiderman was a private individual but it is known that he died in the 1980s.
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