They also are more impact-resistant than glass lenses. They are relatively inexpensive and have excellent optical qualities. Plastic eyeglass lenses are about half the weight of glass lenses. These lightweight alternatives to glass lenses were call CR-39 plastic lenses. Polarization-a special filter that blocks intense reflected light. Plastic lenses The first plastic eyeglass lenses were developed in the 1940s.With Transitions Light Intelligent Lenses™, you get just that-lenses that adjust from clear to dark, and every shade in between. Adaptive Lens Technology-this feature allows eyeglass lenses to automatically adjust from clear indoors to dark outdoors.Xperio UV lenses, Transitions ® lenses, and Crizal lenses offer protection for your best vision under the sun. UVA and UVB blocking-can help protect your eyes from the sun's damaging ultraviolet rays.Crizal ® lenses and Xperio UV™ lenses provide this feature by reducing the effects of glare, as well as protecting against scratches and smudges. Anti-reflective coatings also help lenses look nearly invisible, reducing distraction and improving eye contact.
Choosing lenses can seem like a minefield, there is a massive variety of spectacle lenses available. Anti-reflective coating-reduces reflections, allowing more light to pass through your lenses for better clarity, especially at night. Come in and see us for a Personalised Lens Consultation.A cylindrical lens is the most common way to correct astigmatism. Cylindrical lenses-designed for astigmatisms, or when the cornea of the eye is oval, rather than round.The lens shape is convex (thicker in the middle, thinner at the edge) to bend rays inwards.
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