Hi Index lenses

Lens guide 
We use HOYA lenses as standard.
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HI Index also know as thinner lenses or thinned down lenses 

 Thinning your lens, makes your lens lighter & thinner.

1.6 index recommended  for prescriptions equal to or greater than +/- 4.00D

1.67 index recommended  for prescriptions equal to or greater than +/- 6.00D

1.74 index recommended  for those that want the thinnest