High Index Lens

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People usually buy high index eyeglasses because of their aesthetic appeal. They don't produce the bug eye or beady eye effect, and their thinness makes them compatible with a wide variety of stylish frames.

With non-glass lenses such as the 1.67 high index lenses, you also benefit from their lightness, which is an important consideration for spring and summer outdoor activities. For comfort reasons, heavy lenses don't lend themselves well to hiking, extended walking, or running. By choosing an appropriate frame style and the right lens options, you can fully enjoy the outdoors this spring and summer.

In many ways, exposure to outdoor sunlight is the great equalizer between those who require vision correction and those who don't. The reason is that almost everyone will use …show more content…

Intense UV exposure causes snow blindness, a condition that doesn't necessarily require snow for its occurrence. UV also causes small cumulative damaging effects to the eyes that produce serious eye problems later in life. Fortunately, most high index lenses have a built-in, 100 percent protection against UV. Therefore, there's no need to get an additional UV blocking coating. Make sure to verify this before your purchase.

UV can also reach your eyes by reflecting off the inside surface of your lenses. UV light scatters from reflective surfaces such as beach sand and water. This scattered light, as well as light from the sun when it's behind you, can reach your eyes via reflecting off the inside of your lenses. An anti reflective coating prevents this.

Glare

Intensely bright sunlight and blinding light reflected off objects and surfaces constitute glare. Glare interferes with your vision, and with sufficient exposure, becomes uncomfortable and even painful. One of the best anti-glare solutions is a tinted polarized lens. This technology does an exceptional job of blocking reflected

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