作者: Takashi Hatanaka
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摘要: A method for selecting a balance between distance vision area and near corridor length of progressive addition lens in consideration elements other than life conditions, spectacles-wearing history use conditions user. The includes preparing design variations plural basic distribution groups different from each area-division the area, lengths other, inputting parameters originating prescription information, environmental frame shape information like, group based on aforesaid inputted obtaining standard selected length. As parameters, vertex rear surface right cornea eye left are included setting elements.