Are high-index lenses better than polycarbonate?

To find out more on eyeglass lenses, visit ABOUT Vision®. To further protect your eyeglasses from scratches, keep your glasses in a protective case when you’re not wearing them. Also, never clean your lenses without first rinsing them with a cleaning solution or water. Rubbing a dry, dusty or dirty lens with a cleaning cloth or towel could cause scratches, even on lenses with a scratch-resistant coating. In most cases of thumb, the bigger a lens’s refractive ability is, the less material is required to achieve a specific prescription strength. For the best eye protection at work and during sports, be sure you also spend money on high-quality safety frames or frames designed specifically for sport eyeglasses.

• In addition they offer 100% protection from the sun’s harmful UV light and
• Plastic material is easily tinted, and UV protection could be put into this lens.
• These lenses are the thinnest and recommended when you have a strong prescription which range from +3.00 to -7.00 or higher, and astigmatism correction powers over -4.00.
• 1.61 High-Index lenses bend light better

The price of polycarbonate and Trivex lenses can vary considerably, but many optical stores charge more for Trivex lenses than polycarbonate lenses. 1.74 index lenses are up to 50% thinner than CR-39, 30% thinner than polycarbonate and 10% thinner than 1.67. When paired with an excellent AR your patient could have an excellent looking and clear pair of lenses. That is absolutely not true, there is absolutely no reason why polycarbonate would be damaging to your eyes in any way.

Hard Resin

With high index lenses, stronger prescriptions could be put on thinner materials. High-index lenses are eyeglass lenses that can be thinner and lighter than regular lenses. They’re generally recommended for those who have significantly high refractive errors and strong prescriptions for nearsightedness, farsightedness, or astigmatism.

The 1.74 is manufactured thinner and flatter than standard spherical lenses, which helps reduce the magnification of the eyes. As the prescription strength increases, lenses get thicker and heavier. Higher-index material provides thinner and lighter lenses, which makes them a good option for those who have a strong prescription. But with regular plastic lenses, a lens treatment is necessary for these lenses to block all UV rays. This UV treatment will not change the looks of the lenses and is fairly inexpensive.
They drift happily from the optometrist to the frames shop without too much worry. You peruse frames and soon you find something that looks okay in your cost range, have the optician mark where in fact the center of one’s vision is and await the call. Of course, this means you find yourself with whatever frames were available at the time and standard 1.50 index plastic lenses. Certainly, polycarbonate is the most rigid lens material.
Often, a full pair of glasses take a fortnight to come in. Your eye doctor can change or replace the lenses in your eyeglasses if needed. You may be in a position to purchase them in the office, from an eyeglass shop, and even online. The first decision you’ll need to make when picking eyeglass lenses is the kind of material used to help make the lens.

The Refractive Index

They are able to even be constructed with fashionable ultra thin frames as a result of strength of Polycarbonate. Choosing the right eyeglass lens depends largely on its function.

Some people do better with certain lens materials than others. Though if you’re searching for prescription sunglasses, standard plastic lenses have become easy to tint and so are the best choice for lower prescriptions. Regular eyeglass frames aren’t rated for use as safety glasses and typically don’t supply the type of eye protection needed for sports. Therefore, playing sports while wearing an eyeglass frame that’s not rated for sports eyewear is dangerous and can result in a serious eye injury if the frame breaks, dislodging the lenses.

Lenses

Hi-index lenses are identified by their refractive index number. The refractive index measures just how much light is bent or refracted while passing through the lens. On the downside, polycarbonate is not the best choice in order to tint your lenses. They might be lightly tinted but will not accept an extremely dark tint color. Prescription is not the only factor used to determine which lenses are right for you personally. Pupillary distance, frame type, and lifestyle needs are also indicators.