| 摘要 |
The present invention allows the user to have custom-made lenses where the far-distance corrective segment is always located in the central region of the lens and allowing the user full range of left to right eye movement to view far-distanced objects at eye level. The present invention may have any-sized or shaped bifocal at the bottom of the lens and a trifocal atop, or vice versa, a bifocal at the bottom and a bifocal at the top, and/or a trifocal at the bottom and a trifocal at the top. The location, size and type of corrective lens may be adapted to the user's lifestyle and for maximizing the far-distance correction segment area.
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