Let everyone see your story.
Bifocal lenses made with the glass lenses material for bi-focal vision distance viewing means that the reading area has a half moon shape with a "flat top", in the bottow area of the lens. The standard glass, flat top 28 bifocal has a reading area that is 28mm wide at the top. Crystal Vision Lenses are top quality lenses at a reasonable price point, and come with our Perfect Lenses Guarantee.