Are high index lenses glass or plastic?

High index lense are much thinner than regular glass or plastic. Talk with your doctor to decide which high index lens is right for you. Impact-resistant lenses certainly are a good choice for everybody, but especially ideal for kids and those who do sports. The refractive indexis a measurement of how light bends through a medium. The bigger a lens can score on the refractive index, the thinner a lens could be while still maintaining a precise prescription for a patient.

• Due to this special property, they might be sculpted with less material than regular lenses of the same prescription.
• Standard plastic lenses though need a special lens treatment, which doesn’t alter the looks of one’s eyeglasses and is relatively inexpensive.
• With all things equal, polycarbonate is around 18% lighter than high-index.
• Because of these properties, it is the lens material of preference for children’s lenses, sports lenses, and safety lenses.

Polycarbonate may be the standard choice for almost all eyewear that will require shatter and/or chip resistance. If you have a strong prescription, you should inquire about high-index lenses. To give you an improved idea of tips on how to benefit from high-index lenses, Downtown Eyes shares more information below. Essilor Experts™ are independent eyecare professionals that are specially trained to explain the many great things about lenses from Essilor. They are the first ever to know about the most recent lenses, and about current promotions to ensure you get a great deal on your lenses.
In contrast, we offer many types of eyeglass lenses, manufactured from hi-index plastic or polycarbonate, which reduce lens thickness for greater comfort and a better appearance. An option with high index lenses

What To Expect During Your Online Vision Test

With all of this expertise combined, they should be able to let you know if the mystery lenses are plastic or glass at least. Polycarbonate and Trivex lenses are lighter, thinner and safer.

Glass is available in very high indices such as for example 1.8 and 1.9 but because of its density it really is still very heavy.

How To Choose Glasses That Will Improve Your Appearance

Because of its absorbent nature, plastic lenses can be easily tinted in a large variety of colors and shades. The smaller the frame, the thinner your high-index lenses will be. Also, ensure that your pupils are as near to the center of the lens opening in the frame as possible. Thinner, so you’ll have slimmer glasses and can choose from a wider choice of frames. Scratch Resistant – High Index lenses are hard coated for excellent durability and scratch resistance. For example, in case a polycarbonate lens requires 2 millimeters of material to refract light, high-index may only need 1 millimeter.

However, you should understand your choice will affect durability, visual clarity, and much more. So we’ll examine the two most common lens materials here and present advantages and disadvantages you ought to know of. The frames you decide on are what everyone will notice, but needless to say the lenses are responsible for correcting your vision.

Cost Of High

However, people with strong prescriptions will likely find the additional cost worthwhile, since high-index lenses are much thinner, lighter, and aesthetically pleasing. High-index lenses are constructed of a special plastic-type material that allows your eyeglasses to be thinner and lighter since they bend light more efficiently.
In fact, Trivex may be the lightest weight lens material available. Another advantage that Trivex has over polycarbonate is that it can be easily tinted.