They are very light and therefore comfortable to wear. The most basic choice is between traditional glass lenses and newer plastic lenses such as those made from polycarbonate.
7 Ways To Tell If Your Glasses Lenses Are Made Of Plastic Or Glass
Plastic and glass lens materials with their refractive index and abbe value shown.
Plastic or glass lenses. However you can add an anti scratch coating to your plastic lenses. Natural glass has a clear advantage here. Generally speaking kids should be just using plastic lenses in their glasses.
Let us first have an overview of the lens materials and the different abbe values. Plastic lenses are much lighter than glass lenses and are less likely to shatter. If you live in a cooler climate glass lenses will be noticeably cold to the touch while plastic will seem like a neutral temperature.
While glass lenses won t exactly weigh you down they are significantly heavier than polycarbonate plastic twice as heavy in some cases along the same lines plastic lenses are less bulky than glass ones. Even when the refraction index is the same spectacle lenses made of glass are always thinner than those made of plastic but they are also substantially heavier. Its refractive index range extends from 1 5 to 1 9 while the refractive index range of organic glass plastic is only 1 5 to 1 74.
They are also highly break resistant. Plastic is better for safety and it s lighter and more affordable than glass. The most wearers of glasses use plastic lenses due to impact resistance and less weight.
Plastic lenses depends on your needs. Glass lenses are less likely to scratch than plastic ones. In that respect they outperform glass up to 100 times depending on the type of plastic used.
Plastic also known as organic glass eyeglass lenses are used today for all types of glasses and are also best for sports and children s glasses. Whether you choose glass vs. When purchasing glasses today there are a wide variety of choices.
Glass is a lot more like thin smooth rock holding heat and cold much more efficiently than plastic which tends to resist any significant temperature change. Natural glass also has a greater density than plastic. If you re looking for the highest optical quality glass is the way to go.