Understanding Prism Thinning

The curvature of a progressive addition lens surface gradually increases toward the bottom of the lens, becoming increasingly steeper. This increase in curvature (and surface power) is what produces the add power of the progressive lens. Unfortunately, because the...

Methods for Estimating Lens Thickness

Often, it is beneficial for the eye care professional to predict the finished thickness of a pair of spectacle lenses. Determining the change in thickness that results from the patient's use of a different frame or lens style is a common example.Patients investing a...

OpenOptix Finishing Lab Manual

OpenOptix Finishing Lab Manual Welcome to the project page for the OpenOptix Finishing Lab Manual. The Finishing Lab Manual is the product of the OpenOptix initiative, a communty effort designed to produce free and open optical knowledge content and improve optical...

OpenOptix NCLE Study Guide

Welcome to the project page for the OpenOptix NCLE Certification Study Guide. The Open NCLE Study Guide is the product of the OpenOptix initiative, a communty effort designed to produce free and open optical knowledge content and improve optical care worldwide....

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