The Lens Index number (1.56, 1.61, 1.67) refers to the degree of refraction our lens provides. It indicates the thickness of lenses. The higher the index number, the thinner the lenses will be. When you fill in your prescription, we may have a recommendation of the lens index number based on your prescription, so you can take it as a reference.

Learn what index suits your Rx best below.

1.50 Standard Index

– Suitable for full frames (plastic&acetate&metal)

– BEST FOR RX RANGE +1.00/-2.75 OR BELOW

 

1.56 Mid Index

– Up to 15% thinner than 1.50 lens

– Pricing starts at $16

– Suitable for full frames (plastic&acetate&metal)

– BEST FOR RX RANGE -0.25 to -3.75

 

1.61 High Index

– Up to 20% thinner than 1.50 lens

– Prescription starts at $19 / Readers starts at $15

– Suitable for full frames (plastic&acetate&metal), half-rim, and rimless frames

– BEST FOR RX RANGE -0.25 to -6.00/+0.25 to +12.00

 

1.67 High Index

– Up to 30% thinner than 1.50 lens

– Pricing starts at $39

– Suitable for full frames (plastic&acetate&metal), half-rim, and rimless frames

– BEST FOR RX RANGE -0.25 to -12.00

*This price reference is based on normal prescription glasses and readers, not including prescription sunglasses and prescription photochromic glasses. Adding prescription lenses on sunglasses and photochromic glasses may cost more than normal eyeglasses.