Definity lenses available nationwide

Dallas-Essilor of America now offers Definity progressive lenses nationwide, through its network of Essilor Laboratories and other select labs.

Definity lenses use Dual Add, a patented, two-surface, offset design and free-form process to achieve lower distortion than other progressive addition lenses. Dual Add maximizes the available design space of the lens and allows for the least amount of peripheral distortion, while providing a smoother transition between all distances.

By splitting and slightly rotating the power distribution between the front and back sides, unwanted astigmatism is minimized. Sphere and cylinder powers of the prescription are optimized by using aspheric/atoric curves.