Single Vision
AOT & LTL & Rodenstock & transitions unbreakable lesses used for Rimless frames
poly carbonate & Trilogy
High Index Lesses thin Lesses 1.60 , 1.67 , 1.74 (plastic)
1.70 , 1.80 , 1.90 , lentilux (miniral lense ) Transition Lenses healthy sight adapt Quickly
to UV sun Rays