Unless you’re talking about sweaters during winter or cuts of bacon at breakfast, thin is better than thick—at least when it comes to your lenses. The fact is, a majority of eyeglass wearers are nearsighted, which requires lenses that are thinner at the center and thicker at the edges. The stronger the prescription, the thicker the lenses. Aesthetically, thicker lenses aren’t generally as appealing—who likes to wear thick heavy glasses? Many eyeglass frame options today are sleeker and more streamlined, requiring a thinner lens to accommodate the style. With high-index lenses, thinner, more lightweight lenses are possible for nearsightedness, farsightedness, and astigmatism.
So how do high-index lenses differ from conventional lenses? Regular lenses can be thick and heavy for higher prescriptions, and are made from glass or plastic. High index lenses are plastic lenses developed by chemists that bend light more efficiently requiring less material, resulting in a thinner more lightweight lens. The reduced weight of high-index lenses make them more comfortable to wear.
Most lens designs such as single vision, bifocal, and progressive are available in high-index materials. Pearle Vision likes to say, “we have a lens for that.” Visit an eye care doctor for an exam to determine the lenses that are best for you.