Archive | March, 2014

Distortion-Free Optics

Rimless frames (also called 3-piece or drill-mount frames) are popular for their lightweight and fashionable look.  But every eye care office knows their limitations:  the frames intrude into the optical zone of the lens, holes drilled in to the lenses induce stress and can lead to stress cracking of the lens, mountings come loose, and […]

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