The 1.74 Index lens is one of the thinnest optical lenses available for high prescriptions over -4.00. Paired with Hoya Diamond Finish coatings, the double aspheric design allows for thin and flat lens designs that can reduce the edge thickness compared to base 1.5 lenses by upto 65%. This means lighter and more cosmetically appealing lenses in any degree of prescriptions.

We recommend 1.74 Double Aspheric lenses if you want the best lenses and are after the thinnest possible lenses for your glasses.