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Designer Sunglasses & Prescription Glasses

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Useful information about Sunglasses
Sunglasses may be made with either prescription or non-prescription lenses that are darkened to provide protection against bright visible light. Good sunglasses should also protect against ultraviolet light. Because of changes in the atmosphere, ultraviolet levels are much higher than in the past and ultraviolet protection for eyes and skin is even more important. It is possible to have lenses that look very dark and yet offer little ultraviolet protection. Sunglasses vary greatly and many offer more style than protection.

Glasses with photosensitive lenses, called photochromic lenses, become darker in the presence of UV light. Unfortunately, many car windshields protect the passengers from UV light while not shielding from bright visible light, making photochromic lenses ineffective where they are most needed. Still, they offer the convenience of not having to carry both clear glasses and sunglasses to those who frequently go indoors and outdoors during the course of a day.

Light polarization is an added feature that can be applied to sunglass lenses. Polarization filters remove horizontal rays of light, which can cause glare. Popular among fishermen and hunters, polarized sunglasses allow wearers to see into water when normally glare or reflected light would be seen. Polarized sunglasses may present some difficulties for pilots since reflections from water and other structures often used to gauge altitude may be removed, or instrument readings on liquid crystal displays may be blocked.

Yellow lenses are commonly used by golfers and shooters for their contrast enhancement and depth perception properties. Brown lenses are also common among golfers, but cause color distortion. Blue, purple, and green lenses offer no real benefits to vision enhancement and are mainly cosmetic. Some sunglasses with interchangeable lenses have optional clear lenses to protect the eyes during low light or night time activities and a colored lenses with UV protection for times where sun protection is needed. Debate exists as to whether "blue blocking" or amber tinted lenses have a protective effect. (This text courtesy of Wikpedia )

Dollond & Aitchison eyecare differently. We're the only high street optician with a reputation for professionalism and service built over 250 years. We specialise in eyecare and offer a range of designer and own label glasses.
Get Lenses Contact Lenses at up to 30% discount on the prices you pay with your local optician.

Vision Direct is the first company to break the monopoly on contact lenses by selling direct to the customer in 1998. By doing so prices are up to 70% cheaper on most leading contact lens brand names when compared to high street opticians. Contact Lens Brand names such as Johnson & Johnson 1 Day Acuvue, Bausch & Lomb Soflens 66, Ciba Vision Focus Dailies, Freshlook Colours, to name but a few! What’s more Vision Direct offers no purchase obligations and no hidden fees as is often the case when purchasing contact lenses. Ordering is simple once you know your replacement contact lenses and your prescription is within 12 months of the issue date.

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Are the Top Prescription Glasses and Prescription Sunglasses retailer on the Network. Prices start from just £10 with an average basket size of £55. We offer - Free UK Postage and worldwide delivery options. Top brands of designer glasses - A fast friendly service and a no quibble guarantee.

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