Photochromatic eyeglass lenses are lenses that darken when exposed to ultraviolet rays and adjust their color in different lighting situations. These lenses offer 100% UVA and UVB protection. They are most commonly available in brown and gray tints. These lenses are a great option for everyday day dress eyewear, but are not intended to replace prescription sunglasses. A reason for this is that the windshields in automobiles block the UV rays necessary for these lenses to darken.
Photochromic lenses are often referred to as PhotoGray or Transitions®. These are actually brand names of the lenses. PhotoGray glass was developed by a company named Corning in the 1960’s. The Transitions® name came to us from Transitions Optical in 1991 when they introduced to us the first commercially successful plastic photochromic lens.
Photochromic lenses are now available in a variety of materials such as glass, conventional plastic, polycarbonate, trivex, and hi-index plastics. When choosing the right material for you, it is wise to take into consideration factors such as your daily lifestyle, your prescription range, and your frame selection.
Photochromic lenses are available in single vision, bifocal and progressive lens styles, so people of all ages can enjoy the benefits of these lenses. If you have any questions regarding photochromatic lenses please call Willows Eyewear at Doctor & Associates at 203-227-9380.
