A progressive addition lens (or “PAL”) is a type of multifocal lens that employs a surface with a continuously smooth increase in addition (Plus) power. |
To find a lens in the catalog, locate the item number(s) in one of the indexes below and then simply flip to the section containing the relevant item numbers. |
11 февр. 2023 г. · A layout chart or cutout chart is a tool used by ophthalmologists, optometrists and lens technicians to check the accuracy of progressive lenses. |
The field diagram gives a first indication of the path which the CNC cutter must take as it traverses the progression zone to eliminate the increasing surface ... |
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