ANSI Z80.1-2015 pdf free download.Ophthalmics – Prescription Ophthalmic Lenses – Recommendations. 1 Scope and Purpose 1.1 Scope This standard applies to all prescription dress ophthalmic spectacle lenses in edged or assembled form. It is a guideline for entities that fabricate, assemble or process dress eyewear or lens components. Relevant optical and physical specifications and tolerances of this standard also apply...