CUTTING EDGE TECHNOLOGY IN HI-DEFINITION LENSES
Line Free Progressive Lenses
Until recently, bifocal eyeglasses had a line going across the lens. Now there are several variations on the theme. All work the same way, by reserving part of the lens for near-vision correction. The rest of the lens can be used for distance vision correction or can have no correction at all. Multifocal means “having more than one focus,” so bifocal and trifocal lenses are types of multifocal lenses. In addition to bifocal and trifocal lenses, the other multifocal is a progressive addition (no-line bifocal) lens that increases power from top to bottom. Progressive lenses have no clear dividing lines as the focus changes from bottom to top. They have become popular in recent years because they look like single-vision glasses.
Lined Bifocal & Trifocal Lenses
Bifocal lenses have two parts: an upper part customarily used for distance vision and a lower part used for near-vision tasks such as reading. Trifocal lenses have three focus areas: the top for distance vision, the center for intermediate vision, and the bottom for near vision. After the age of 40, many people develop a condition called presbyopia, a deterioration in the ability of the eye’s natural lens to expand or contract to focus on close objects. People with presbyopia need a unique lens for reading, which can become cumbersome when trying to simultaneously do near-sighted and far-sighted tasks. For this reason, Benjamin Franklin invented bifocals so that he would not need to switch glasses when reading. These lenses serve the same purpose today.
Polarized lenses block the glare, reflections, and harmful UV from sunlight and man-made light sources. They are tinted at all times and are available in gray and G15 colors. These lenses are recommended for outdoor activity as they offer the best clarity around water, snow, golf greens, and tennis courts. Polarized lenses may be made of polycarbonate.
Photochromic lenses darken on exposure to ultraviolet (UV) radiation. Once the UV is removed (for example, by walking indoors), the lenses will gradually return to their clear state. Photochromic lenses may be made of polycarbonate or other plastics.
We offer popular lens options, including various coatings that can make eyeglasses more comfortable and functional.
UV protective lenses keep the eyes safe from ultraviolet sun rays, which have been shown to cause cataracts and certain diseases of the eyes. If you spend much time outdoors, UV protection is an excellent idea for the long-term health of your vision and eyes.
Mirror coating on lenses reduces the heat entering one’s eyes but can also affect visual acuity.
Anti-reflective (A-R) coatings are metallic oxide coatings applied to the lens surface to reduce reflections from the front lens surface and eliminate reflections from the back.
Scratch-resistant coatings are applied to the front and back surfaces of lenses to protect against accidental scratching and to improve durability.
No matter what kind of lens you need, our Opticians can help you find the right ones. You can rely on the experience and quality of service our team has provided for over 25 years.
CONTACT US for more information.