| 摘要 |
<p>A method for the preparation of spectacles (1) for a presbyopic emmetropic person, comprising the steps of: -providing a frame (2), -providing a plurality of multifocal lenses (3, 3a-3c), all suitable for mounting on the frame, and on each of which a correction area (4) is defined, extending on a lower portion of the lens, starting from a lower edge (5) of same, up to a predefined height (H, H1, H2), each of the lenses further having a positive dioptric power suitable for the correction of presbyopia within the correction area and a substantially zero dioptric power outside the latter, the lenses differing from one another in the value of the positive dioptric power and/or in the measurement of the height (H) of extension of the correction area, -selecting from the plurality of multifocal lenses a pair of lenses having a positive dioptric power suitable for correcting the degree of presbyopia of the person and having a suitable measurement of the height of the correction area so that, when the person puts on said spectacles, said correction area is located in a zone of vision preferred for close vision and is not substantially involved in distant vision, and -coupling the selected pair of lenses to the frame in order to obtain the spectacles. A kit is also described for the preparation of spectacles according to the preceding method, and also the spectacles thus obtained.</p> |
