74341776
Dec 21, 1992
Aug 16, 1994
frame and lenses specifically formulated and designed for individuals of normal vision to view computer-video screens and specifically having lenses to increase the individual's productivity by combining in the lens sufficient power to relax the eyes' accommodation, anti-reflective coating to reduce screen glare, ultra-violet absorption to eliminate radiation and tints to enhance contrast; and clip-on special lenses for individuals using corrective frame and lens and having the same special lenses as defined for the aforementioned special frame and lens and capable of being clipped on to and carried by the individual's corrective frame and lens so as to relieve the visual stress of the individual viewing a computer video screen
Electrical and Scientific Apparatus