Fluoro-silicone acrylates
• Harder, better optics, more stable • Higher oxygen permeability • Improved wettability, deposit resistance. • Easier to clean, but can attract lipids and lipid-like
1970’s- Bausch & Lomb (1971)
Rynco Scientific (1973)
Rosenthal, et al (1978)
L. Seidner
(1979)
- HEMA material development begins
- Introduced soft lenses in U.S. - Introduced CAB material in U.S. - Introduced Boston material in Canada - Introduced RGP material in U.S.
• Boston® Envision™-1993 • Boston® 7-1994 • Boston® ES™-1995 • Boston® XO-1997 • Boston® MultiVision-1998 • Boston® EO-1998 • Boston MultiVision Plus-1999
• Quality of vision may be compromised for convenience
• Impact on eye physiology greater than with RGP’s
• Delicate. easy to damage