ANSI Revises Z80.1

ANSI has published its 2015 revisions of Standard Z80.1, Prescription Ophthalmic Lenses--Recommendations, reports the Vision Council. The revision, which supersedeses the 2010 Standard, made the following modifications:

• Updates to the Scope and Purpose sections.
• Modifications to definitions, and the addition of "Position of Wear."
• Additions to the optical requirements section, such as clarifying the applied tolerances for compensated lenses.
• Changes to marking guidelines.
• A recommendation for minimum transmittance when driving, providing guidance and harmonizing with ANSI Z80.3 requirements.
• The addition of a reference to orientation of polarization.

A copy of the standard publications is available in the ANSI webstore. A summary of the changes can be found in the foreword of the document. Read more.