Jim Halo Retro Square Sunglasses Premium Glass Lens Flat Metal Eyewear Men Women

Product Information

High-index lenses refers to any type of plastic or mineral lens material with a refractive index higher than 1.5 (standard index.) High index lenses can be made from CR39, polycarbonate, Trivex or glass in various mid to high indexes ranging from 1.56, 1.60, 1.67 and 1.74. Generally, the higher the index of lens, the thinner it is. They are flimsier than other pairs we tried and the high-shine, faux gold finish on the bridge bar looks a little cheap. However, with some care, we feel they could last a long time, with scratch-resistant lenses, three-barrel stainless steel hinges, and arms that unfold easily and stay in place when open. The sunglasses’ lightness also means they’re comfortable to wear, while adjustable nose pads allow for a customizable fit. The polarization passed our tests, while color combinations range from Ocean Pearl with a Smoke lens to Moss with a Green lens.

So not polarized glass and plastic lenses in sunglasses. Or contrast enhancing glass sunglass lenses with plastic lenses. Or compare polarized plastic and glass sunglass lenses with each other. If you mix the categories together and try to compare, the comparison always limps. Brown/amber lenses. This lens tint can enhance depth perception. While brown/amber lenses are great for pilots, sailors and golfers seeking clarity on sunny days, they tend not to work well on cloudy days.However, the hue of your lenses still plays an important factor regarding visual performance. Some colors are more suited for certain activities, so it is still worth considering which lens color will be best for your sunglasses. Furthermore, glass is much heavier at nearly twice the weight of CR39 plastic lenses. Not ideal when they could easily weigh more than your spectacles themselves. In this article, we would like to go into the differences of sunglasses and have the glass lenses compared to the plastic versions and what you should look for when buying when it comes to configuration.

Cons: While high-quality, the lenses aren't quite on par with the likes of Maui Jim, but are exceptional, especially for the price. As a rule, the difference in sunglasses is then described as somewhat clearer and more brilliant in the sunglass lenses. However, this effect also depends on the particular sunglass lenses that are compared. You should always compare sunglass lenses of the same category in such a comparison. Plastic lenses tend to be the more popular option, especially when it comes to plano (non-prescription) sunglass lenses, but there are variations in quality which should be a consideration.Most, if not all modern reading glasses lenses are now made of plastic known as CR39. This is a hard wearing resin material that outdated glass lenses in 1940 when it was first invented by Columbia-Southern Chemical Corporation as part of their ‘Columbia Resins Project.’ [ ?] Green lenses. This tint is a good all-around choice for outdoor sports — green lenses both reduce glare and brighten shadows. Because they work in rain or shine, green lenses are a versatile choice. Plastic lenses. Plastic is lighter than glass and provides more protection against shattering. Plastic also is easier to coat with various tints and treatments. Activity: When choosing a pair of sunglasses, consider what you plan on doing with them. While some styles can bridge the gap between activities like cycling or running and brunch with friends, like Smith's Lowdown 2 or the Fuse Egmont. Some sunglasses meant for sports may look out of place on a date, while some fashion sunnies may not stand up to sweat and wear from hard workouts.

We also appreciated their weight, which reinforces the impression of superior craftsmanship and suggests they should last a long time if cared for properly. The sunglasses offer a snug, comfortable fit ideal for leisure pursuits (although one of our testers did find that there was some light leakage around the edge of the frame on particularly bright days). The lenses are made of mineral glass for the best quality optics, definition, and contrast, with an anti-reflective coating and 100-percent UV protection. Choose from five gorgeous colors, including Blush and Tortoise. Gray lenses. This variety of lens tint is versatile — gray lenses work on sunny or overcast days. They’re good for driving, cycling and fishing, and gray lenses function well for sports such as baseball and tennis. The most common hue for sunglasses lenses, gray lenses don’t interfere with color perception. It was their 39 th iteration of resin that later became prolifically used for making optical lenses, hence the abbreviated name CR39.Both are viable lens materials. Glass is extremely scratch resistant, can provide a very high refractive index, but is more fragile to hard impacts. Polycarbonate is also hard wearing and has great impact resistance, but has a slightly lower refractive index. If you want hard-wearing lenses, polycarbonate or Trivex are safer for sport or protective prescription eyewear.

Aspheric lenses use more complex, undulating areas of curvature. They tend to have flatter curves which makes them more visually appealing than conventionally curved ‘spheric’ lens types. They can be made from polycarbonate, CR39 or high-index plastic. These sunnies are cool enough for a fancy garden party but tough enough for a long run or strenuous hike. They're perfect for whatever your day brings you. This makes depending on the sunglasses model a 3-4 grams and sounds quite little at first. However, even a few grams of weight difference is clearly noticeable on the nose for people who have a sensitivity to pressure. The experience with glass lenses in sunglasses is consistently positive. Very few prospective customers complain about the higher weight. However, it is usually noticed that the glasses still have scratched lenses even after years. And that, of course, is a big advantage. While cataracts and macular degeneration are long-term concerns, there are more immediate issues caused by the sun. In the short term, overexposure to sunlight can sometimes cause photokeratitis, a condition the American Optometric Association likens to “a sunburn of the eyes.” (This is also commonly known as snow blindness.)Polycarbonate is much lighter and thinner than other lens materials but can be very expensive depending on your prescription. Prescription lenses. Do you need vision correction when driving or for other outdoor activities? If you have even a small amount of refractive error, correcting your outdoor vision with rx sunglasses will help you see more clearly and comfortably in bright sunlight. The first step to getting the best outdoor vision possible is to schedule an eye exam. WEIGHING YOUR SUNGLASSES OPTIONS? Shop for sunglasses at an optical store near you or an online eyewear retailer. Sunglass lens replacement: Plastic lenses