Lens Marking Guideline v2.0 Revised 2014-06

The purpose of these guidelines is to serve as a reference for placing temporary and permanent markings, such as ink markings and semi-visible engravings, on the surface of a spectacle lens.

These guidelines are intended to maximize the accuracy of automatic and manual positioning, processing, and verification in lens production environments.

Additionally, these guidelines are intended to provide a consistent set of recommendations for placing markings onto progressive and single vision lenses to maximize efficiency for laboratory personnel and eyecare professionals.

It is recognized that alternative marking geometries may accomplish satisfactory results. As such, these guidelines serve as recommendations only.

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