Bifocal lens and bifocal soft hydrophilic contact lens
The invention provides a bifocal lens and a bifocal soft hydrophilic contact lens, the bifocal lens comprises a first lens and a second lens, the first lens comprises a mounting area and a correction area, the mounting area is annular, the correction area is circular, and the mounting area and the c...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a bifocal lens and a bifocal soft hydrophilic contact lens, the bifocal lens comprises a first lens and a second lens, the first lens comprises a mounting area and a correction area, the mounting area is annular, the correction area is circular, and the mounting area and the correction area are concentric circles; the correction area comprises a plurality of first sub-correction areas and a plurality of second sub-correction areas, the first sub-correction areas and the second sub-correction areas are sequentially and alternately arranged in a concentric circle mode, and the circular first sub-correction areas are located in the center of the correction area. The rest of the first sub-correction areas and the second sub-correction areas are annular, and the second sub-correction areas are located at the edge of the correction area; the installation area is provided with an installation notch, the second lens is arranged in the installation notch, and the second lens is provided with a t |
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