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Out of glass or plastic, bifocal lens are made. Tinted with different colors of your choice and made of plastic material Plastic lenses is light weight. Providing good protection from the sun they block 80% of UV rays. Glass lenses have excellent inherent optical quality and are more prone to scratches.
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A Detailed View of Your Prescription Eye Glasses Lenses For providing proper protection for the eyes the lenses used in sunglasses are very important. Different types of lenses with the advancements in the glass manufacturing technology are used in glasses. Different needs are catered by each and every type caters. To choose the glass for your purpose you have to know about the lenses. Out of glass or plastic, bifocal lens are made. Tinted with different colors of your choice and made of plastic material Plastic lenses is light weight. Providing good protection from the sun they block 80% of UV rays. Glass lenses have excellent inherent optical quality and are more prone to scratches. High index plastic material High index plastic material is used to make high index lenses. Being very thin they are mostly utilized for cosmetic purposes. From the harmful rays of the sun 100% protection is offered by the high index lenses like polycarbonate lenses. As with the increase in the index of the lens the surface reflections increase high index lenses must have anti-reflective coating. The progressives lenses are also very popular. Photochromic lenses Irrespective of the conditions prevailing outside, the property to control the light entering the eye must be present in Photochromic lenses. To reduce the strain on the pupil of the eyes you have to choose these lenses when you alternate between outdoor and indoor. Polarized lenses For an outdoor aficionado Polarized lenses are perfect. By cancelling the rays due to reflection from the flat surface they greatly reduce the glare. When you are engaged in skiing, golfing, driving, and so on these lenses can be used. From the harmful UVB and UVA rays of the sun any glass must provide you protection. Your eyes are exposed to the hard sun when you go out. So ensure that proper UV coating is there in your crizal lenses.
Polycarbonate As these materials inherently block the sun you need not worry about UV protection if your lens is made of high index plastic or polycarbonate. You may consider the use of high index plastic lenses or aspheric lenses when you want your conventional prescription glasses to look light weight and thin. The style can be maintained by using smaller frames also. To prevent the lenses from getting scratches very often scratch resistant coating (SRC) is essential for all lenses. With this SRC coating by default high index and eyeglass lenses come. To reduce the reflective rays for certain type of lenses like high index plastic Anti-reflective coating (ARC) is essential. Glare caused by staring at the computer and during driving in the night is eliminated by glasses with this coating. But SRC and ARC are mutually exclusive as glasses that have this ARC are prone to scratch. On the same lens you cannot have both coatings. You can add tints to your lenses to see the world in your favorite color and to improve the look. With their favorite colors many adults are now tinting their lenses. To plastic lenses Tints can be effectively applied. In plastic lenses the tints will be absorbed uniformly. Glass lenses are more difficult to tint and cannot be tinted uniformly. Conclusion Now, if not complete but you have a clear idea about the lenses. Make sure to choose lenses carefully as eyes are precious. Business Name: Eyeglass Lens Direct LLC Address: 19901 Southwest Freeway Sugar Land State: Texas Country: United States, Zip: 77479 Contact email id: info@eyeglasslensdirect.com Phone No.: 800-885-5367 Fax: 281-242-4329