Bifocal glasses lenses explained
7:49
YouTubePrecision Optics Eyewear
Bifocal glasses lenses explained
In this video I explain the different types of bi focal lenses. There are different shapes and sizes of bifocal lenses and it's good to familiarize yourself with the options available. The bifocal lenses shown here are: D28 D35 R24 R38 C28 The letter represents the shape of the seg (segment = the small section where the resting area is) I.e D ...
25.4K viewsJun 14, 2021
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