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Ray ban lenses are constructed of impact-resistant optical glass that could be naturally scratch resistant. Quality and stability are remarkable furthermore time it is obvious certainly no fading whatsoever for the colour.Polarized LensPolarized lenses from ray ban sunglasses essentially trim down the quality of glare maded by reflective surfaces like water and other semi-transparent objects, and in many cases some metallic surfaces. Glare means futility of seeing in bright light.Sunlight, as an example, bounces off surfaces in all directions (i.e. vertically, horizontally or diagonally). Some people will are involved in the "horizontal plane", it signifies how the bright sunlight bounced horizontally enters a person's eye similarly involving ray ban uk This will cause the pupils to constrict and significantly reduce contrast. Rest room drivers have difficulty seeing the street prior to them when they are driving in very sunny conditions (if ever the sun is in advance of them).Polarized lenses of ray ban have got a laminated surface with vertical stripes that can cause a filter, which effectively reduces the horizontally-polarized light and allows only vertically-polarized light in. To paraphrase, if however you be with a clear lake you might probably see with the surface or in case you are driving, anyone can view the road ahead.Some limitations to polarized lenses are that LCD displays can become distorted or you do may notice a "rainbow" effect if you are car's windows are tinted.All 3 lenses are very useful, especially the polarized ones, but count on paying reasonably limited for the sunglasses.Lens BaseThe lens base simply refers to the base curve as well as front curve in the lens measured in "diopters", a term that ultimately only matters to opticians. You'll find that many ray ban uk aviators require a "Lens Base 6", which basically suggests that they're sufficiently curved and created to serve as sunglasses (i.e., they cover your eyes enough).Lens SizeLens dimension is measured in millimeters and refers to the length (or width) of just one lens. Bear that under consideration when making a sale. Many ray ban models consist of several unique sizes of lens. Ensure you get the size that fits your face or you do may end on top of a pair of aviator shades that don't fit properly.Some ray ban sunglasses have lens sizes that are designated as extra small, small, etc. This is common for models that do not resemble traditional glasses with two lenses. These sunglasses have a "uni-lens" design, where the lenses are connected seamlessly through the bridge. For this reason, traditional sizing is not applicable. These shades are for a high fashion look.