At Eyeglassdirect.com our Bifocal Flat-Top 28 1.67 Super-Thin High Index Lenses are manufactured using the same 1.67 material as our standard lenses, with ultraviolet filter and scratch resistant coating. Bifocal Flat-Top 28 provide you with clear, sharp distance and reading vision.
Our Super Thin High Index Lenses, with a refractive index of 1.67, are substantially thinner and lighter than CR39 plastic and polycarbonate lenses all other that Opticians and Optometrists may sell as high index lens. They are manufactured with an aspheric (flatter) design.
1.67 Super Thin High Index Lenses are highly recommended for people who wear larger, rimless eyeglasses frames or who have smaller pupillary distances (i.e. less than 62 mm).
Prescription recommendation: (over +3.00/-3.00)