The glasses have two portions ,top part is for Distance Vision & bottom part is for Near/Close Vision. Reader part at bottom is in Semi Circle shape also known as Round Top Bifocals,benefits of Round Top Bifocals against conventional Flat Top bifocals is reading part is not raised but its blended in the lens, so reader part is visible when you see them but if you see them behind any solid color or after wearing it will be very difficult for anyone to judge that you have worn bifocal glasses.
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