| http://www.w3.org/ns/prov#value | - The plastic lens 10 is particularly adapted to be utilized in eyeglasses as it is approximately 5 percent harder and thereby more scratch resistant than plastic lenses formed by thermal curing techniques, such as in the manner set forth in U.S. Pat. Nos. 3,038,210 and 3,222,432, the disclosures of which are hereby specifically incorporated herein by reference.
|
