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1.71 Indorerwamo za HMC zo mu bwoko bwa Single Vision Optical
Lenzi ya 1.71 Izina ryuzuye Lenzi ya 1.71 ifite igipimo cyo kugarura urumuri, ifite ubushobozi bwo kohereza urumuri bwinshi, ifite imiterere ya Abbe nyinshi, mu gihe ifite urwego rumwe rwa myopia, ishobora kugabanya cyane ubunini bwa lenzi, ikagabanya ubwiza bwa lenzi, icyarimwe, bigatuma lenzi irushaho kuba nziza kandi irabagirana, bitakoroha gukwirakwiza uduce tw'umukororombya. Byagaragaye ko kongeramo resin ya sulfide cyclic mu bikoresho bya lenzi bishobora kunoza igipimo cyo kugarura urumuri cya lenzi, ariko resin ya sulfide cyclic nyinshi izatuma urumuri rugabanuka no gucika kw'ibikoresho. Mu kugenzura neza ingano ya resin ya ring sulfure muri resin ya 1.71KR, lenzi ya 1.71 igera ku gipimo cyo kugarura urumuri kinini n'umubare wa abbe mu gihe igenzura ko urumuri rutanga urumuri rwiza, gukwirakwira gake no kubona neza.
