Bifcocals are dispensed to people who require distance and reading glasses.
Lenses are made in different indices. The higher the index the thinner the lens. Currently, in plastic, you can get 1.5, 1.56, 1.6, 1.67 and 1.74 indices
Purely Spectalces Unit 16 Burnley Indoor Market Curzon St Burnley
Post Code: BB11 1B