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| бифокальный |
bifocal
|
| двухфокусный |
bifocal
|
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Alternatively, some people use varifocal or bifocal lenses in order to see objects clearly that are both close up and far away.
This restricted the movement of her head which reduced her ability to use her bifocal glasses.
The multiple vision lenses include bifocal lenses for near and distant vision.
Two developments, bifocal lenses and better spectacle frames, helped move optometry from a vendor trade toward a recognized profession by making fitting and selecting eyeglasses more complicated.
But they also have a bifocal segment in the lower quadrant of the lens that lets us find the correction needed to bring the front sight into focus.
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