Saved Bookmarks
| 1. |
Uses of bifocal lenses |
|
Answer» Sometimes a person may suffer from both near sightedness and far-sightedness. Such people are advised to use bifocal lenses. Bifocal lenses consists of concave on the upper portion and convex on the lower portion. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism. |
|