累るい進しん焦しょう点てんレンズ

noun

progressive lens; multifocal lens

Technical term in optics and eyewear; refers to lenses with a gradual change in focal power, commonly used in glasses for presbyopia.

• 累るい進しん焦しょう点てんレンズは遠えん近きん両りょう用ようメガネに使つかわれています。

  Progressive lenses are used in bifocal glasses.