The Flat-top lens: The Flat-top lens is a lens for both near and far vision, providing convenience for people with both myopia and presbyopia, without having to take off their glasses at any time.
Bifocal lenses are lenses with two different powers, usually used to correct both farsightedness and nearsightedness. The upper part of the lens is used to correct farsightedness, while a small area at the bottom is used to correct nearsightedness. This design allows the wearer to see objects at different distances without having to change glasses.
Bifocal | ||
DIA | SPH | ADD |
70/28mm | 0.00~+3.00 | +1.00~+3.00 |
0.00~-2.00 | +1.00~+3.00 |
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