How Thick Should My Lenses Be, and Is It Possible to Make Them Thinner?
How We See It
Thick glasses have not always been considered fashionable. Even if you are someone who looks to glasses more for vision enhancement and less for a fashion statement, chances are you probably do not want to sport a pair of overly “chunky” glasses. Thankfully, modern technology has helped us swap the previous chunky plastic frames with lightweight frames and much thinner lenses.
What’s in a Lens?
Lenses incorporate a number of materials in their composition, which in turn governs their thickness and performance. Polycarbonate lenses are constructed of a lightweight and thin plastic-like substance. These lenses usually come with an additional coating to make them scratch resistant. Trivex lenses are more favorable for their anti-scratch attributes when compared to their Polycarbonate counterparts, while they also offer better vision performance to individuals with high prescriptions. Aspheric lenses are another type of lens that sport a curvature that gradually varies from the center to the corners.
Are There Thinner Lenses for Glasses?
If you often wonder, “Why are my glasses so thick?”, then you may have high prescription glasses, requiring thicker lenses, depending on the material of which they are composed. Of course, the lenses we highlighted above are not the only options for you. Try looking at high index glasses. Technically, any lens with a refractive index of 1.6 or higher is taken as a high index lens. These glasses are much denser and heavier than their plastic counterparts, but they are also much thinner. The thinnest lenses available have an index of 1.90, which are almost 75 percent thinner than those of average thickness. An additional advantage of these high index glasses is that they do not make your eyes appear smaller or larger, as in the case of many thick prescription lenses. They also offer sound durability and scratch resistance. The downside is that these glasses are highly reflective, so they require a coating of anti-reflective material, which can add an element to the cost.
Along with making the best choice in lenses, your local Vision Source North Carolina practice can help you choose the perfect frames to fit your vision needs and style. To check out the many lens and frame options available, schedule an appointment at a Vision Source North Carolina near you.