| 摘要 |
<p>The present invention is made to provide a method for selecting a balance between a distance vision area and a near vision area and a corridor length of a progressive addition lens in consideration of elements other than life conditions, spectacles-wearing history and use conditions of a user. The method includes preparing design variations which consist of a plurality of basic design distribution groups different from each other in area-division between the distance vision area and the near vision area, and a plurality of corridor lengths different from each other. The method also includes inputting parameters originating from prescription information, life environmental information, frame shape information and the like, selecting a basic design distribution group and a corridor length based on the aforesaid inputted information, and obtaining a lens design standard based on the selected basic design distribution group and corridor length. As parameters, a distance between a vertex of a rear surface of a right progressive addition lens and a vertex of a cornea of a right eye and a distance between a vertex of a rear surface of a left progressive addition lens and a vertex of a cornea of a left eye are included in setting elements.</p> |
