If you find yourself taking your reading glasses on and off frequently you may want to consider getting bifocal reading glasses. There two different kinds of bifocals and many different reasons why people wear bifocal reading glasses.
eBay
Lens: Bifocal Clear Bifocal Lens. 1x Reading Glasses(With Free Gift Glass Cloth). Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Material: Plastic.
eBay
Progressive Varifocal Multifocal Readers If you find yourself taking your reading glasses on and off frequently you may want to consider getting bifocal reading glasses. There two different kinds of bifocals and many different reasons why people wear bifocal reading glasses.
eBay
The tinted UV400 lenses have small bifocal portions in the magnification of your choice, while the rest of the lens is unmagnified. Lens:Gray / Brown Tinted UV400 Lens. 1x Reading Glasses(With Free Gift Glass Cloth).
eBay
【THREE LEVELS OF VISION】：Progressive multifocus glasses for all your need. The middle part is slightly reduced power magnification for working on computer, watching TV, etc. The bottom part of the lens is full-power,used for nearly distance reading.
eBay
Lens: Bifocal Photochromic Bifocal Lens. 1x Reading Glass(With Free Gift Glass Cloth). Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.
eBay
Lens: Bifocal Tinted Brown Gray Blue Green (At your request). 1x Reading Glass(With Free Gift Glass Cloth). Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.
eBay
Multifocal Progressive Lens. Lens:Multifocal Progressive Lens. up 0, down 100: Far Distance 0 Degree / Near Distance +100 Degree for Reading. up 0, down 150: Far Distance 0 Degree / Near Distance +150 Degree for Reading.
eBay