Specifications:
CR-39 Resin 1.67 Index Free Form Photochromic Lenses are suitable for all frame styles with SPH -4.25 to -6.75 or +4.25 to +6.75 CYL -2.25 to -3.00 or +2.25 to +3.00
Coating: HMC, EMI Anti-reflective
Color: Brown
The price on the page is for 1 pair (2 lenses)
These lenses are anti-reflective, anti-scratch and have UV protection. In addition they have an anti-electromagnetic radiation surface coating. This invisible barrier filters out 100% electromagnetic radiation waves and does not produce static electricity. This in turn offers even more protection for the eyes.
Progressive lenses digital state of the art technological improvements have created a smooth and consistent transition between differing lens strengths within the lens itself. Also known as “multifocal” or “varifocal” lenses, they offer all of the improvements of the old out moded bi- or trifocal lenses such as a 20% wider scope of view that is undistorted, a unique visual correction design in these lenses is created on the back of the lenses rather than on the front. This allows elimination of the 'key hole effect' common to standard progressive lenses. Digital lenses are surfaced on both sides and often called free-form because the lens is customized to the patient's prescription in a very precise manner.
Photochromic lenses are eyeglass lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight. An added benefit of photochromic lenses is that they shield your eyes from 100 percent of the sun's harmful UVA and UVB rays. It's a good idea to consider photochromic lenses for children's eyewear as well as for eyeglasses for adults Because a person's lifetime exposure to sunlight and UV radiation has been associated with cataracts later in life.
For accurate ordering of lenses please see the How to Choose Lenses Index charts in this product page. If you require any additional assistance please contact us via our customer service email at [email protected].
