Expanded range, tints offered for progressive lenses

Roanoke, VA-The Spectacle Lens Group of Johnson & Johnson Vision Care Inc. is expanding its prescription range for the polycarbonate version of its Definity progressive lenses, and new tinted options.

The polycarbonate lenses now are offered in +4 to -7 D in sphere range, and -0.25 to -4 D in cylinder range. They also now feature an add range of +1 to +3 D, prescribed prism range of up to +6 D, and lens diameter of 78 mm.

The Definity lenses feature "dual add" technology in which the prescription is divided over the front and back surface of the lens to reduce astigmatism and a smooth transition between distances.

The tints will be available in three densities of sunglass tints of gray, brown, and gray-green, and in cosmetic shades of light green, pink, blue, beige, yellow, violet, and more.

Lenses may be custom-tinted to match any shade, and gradient or double-gradient tinting can help reduce glare and light intensity.

Although tints do not block UV light, the company will provide an ultraviolet block free of charge on tinted Definity lenses made from CR-39. The company's GemCoat multicoating system, for anti-reflective and scratch-resistant qualities, also is available for tinted lenses.