Combining Transition Lenses and High Index Lenses: What You Need to Know They are two technologies that have revolutionized modern eye-wear, and often lead the list of desirable options when selecting a pair of prescription eyeglasses: transition lenses and high index lenses. So can they be combined? The short answer is yes, with limitations. Let’s […]

Basically, there are three distinct areas of difference between standard and high index lenses: Thickness Weight Price High index lenses are made of a material that is capable of bending light to a stronger degree than indexes with a lower rating. Because of this, they require less physical material to produce a prescription. Therefore, high […]

Traditional lenses – the kind that have been around for centuries – form a spherical shape. This means the curve they follow is the same across the length of their surface. The degree of curvature will vary with the lens material and prescription, but the curve itself is cupped and completely round. Spherical and Aspheric […]

After exploring your options, you may decide to select high index lenses for a number of reasons. Perhaps you have a strong prescription and want to reduce the distortion caused by standard lenses. Maybe the smaller profile of a high index lens will look much better in your desired frame style. Maybe your standard lenses […]

Anything over a 1.60 index can generally be described as “high index.” Lenses at 1.74 and beyond fall into the category of ultra high lenses. Those who have extremely high prescriptions (plus or minus 6.00 D or more) experience the greatest benefits from the reduced weight and thickness of high or ultra high index lenses. […]

Transition lenses and high index lenses are two of the better technologies of modern eye-wear. Transition (or photochromic) lenses automatically darken when exposed to the ultraviolet light of the sun and revert back to clear at night or indoors. This ability virtually eliminates the bother and expense of purchasing and switching between two separate pairs […]