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PROBLEM TO BE SOLVED: To provide a spectacle lens design method that can set an area in which improvement in specific items such as an average diopter error and the like is achieved in an arbitrary direction and size within a lens.SOLUTION: A spectacle lens design method comprises: (a) a...
It is important to note thatan eyeglass prescription is different than a contact lens prescription. Eyeglass lenses are positioned at a distance from the eyes, while contact lenses rest directly on the eye’s cornea. That difference affects the lens power, among other things, required for your ...
Before you start fixing broken eyeglass lenses at home, it’s important to assess the type of damage and gather the necessary tools. Identifying the type of damage can help you determine the best fixing method while having the right tools will make the process smoother. ...
If your glasses are dirty, you might need an additional application of eyeglass cleaner to make your lenses completely clean and clear. If there are still stains that are on the surface, continue cleaning using liquid dish soap and some warm water. After washing, dry normally using your soft...
Large, heavy frames may need to be sized looser than usual. Frame Materials There are dozens of different chemicals and alloys used to make eyeglass frames. Plastics and nylon-based composites are usually used for brightly-colored glasses, though painted metals are also available. Zylonite (...
Use prepackaged eyeglass wipes to clean your lenses when on the go. How to Clean Glasses’ Frames While we rely on clean lenses to see properly, theframescan also accumulate grime and dirt through everyday use. Wiping them down is a step many people miss, but just like polishing jewelry,...
Eyeglass prescriptions from opticians typically show the strength of the corrective lenses you need in diopters.The focal length isn't the only important feature of a lens. Bigger lenses gather more light than smaller ones, so they make a brighter image. This is particularly important if you're...
Understanding your eyeglass prescription is easy! Learn how to read it with Zenni Optical's examples of common types.
Eyeglass temples must be the right length for your glasses to fit comfortably and securely. Learn how to choose the best temple length.