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PLASTIC: Lightweight and durable, less expensive than higher tech materials. Plastic (CR39) lenses can be tinted, but do not protect from harmful UV light unless they are treated with UV protection for an additional charge. POLYCARBONATE: Most impact resistant material available, recommended for children and athletes for safety issues, thinner than plastic but not as thin as other hi-tech materials. Polycarbonate lenses absorb harmful UV light and can be tinted. HI-INDEX: The thinnest lenses available, hi-tech material that bends light differently, allowing the lens to be slimmer than other materials. Not as light as polycarbonate, but thinner and available in different "indexes." (The higher the index, the thinner the lens, and, usually, the higher the price.) Hi-index lenses absorb harmful UV light and can be tinted. GLASS: Superior optics, but much heavier than the higher-tech lenses of today. As the industry has gone to 99% plastic, polycarbonate, and hi-index lenses, glass lenses take longer to make - usually two weeks. They are heat treated or chemically hardened to increase impact resistance, but are not as safe as the other materials. SINGLE VISION: One vison only - reading, distance, intermediate (computer, organ, piano) designed to work at one distance only. LINED BIFOCALS/TRIFOCALS: Designed to work for distance and reading or distance, computer and reading with lines separating the visions. Although not as cosmetically pleasing as a no-line, many patients find much success wearing these lenses. PROGRESSIVE LENSES (NO-LINE BIFOCALS): Provides the visual benefits of both bifocals/trifocals by providing all the visions in between distance and reading, including computer or intermediate vision as you "progressively" see through the lens. ANTI-REFLECTIVE LENSES: Special coating that makes the lens look invisible and reduces the glare when driving at night, working on a computer, or under bright lights. Enhances appearance in photos and in the public eye by removing reflections from the lens. It allows people to see your eyes and decreases eye strain for the wearer. TRANSITIONS: Lenses that darken when you go outdoors and lighten back up when going back inside. Acts as a prescription sunglass for many patients. TINTS: Color in lens to give protection from glare, or makes a fun fashion statement. Includes any color you can imagine: blue, green, yellow, orange, brow, grey, pink, purple, or any combination of colors. Your imagination can be the designer! SCRATCH COAT: Additional protection for lenses that go beyond the normal wear and tear of everyday use. UV PROTECTION: A special coating to help protect from harmful UV rays that can be put on lenses that don't have the protection built in. POLARIZED LENSES: Lenses with a special filter built in to eliminate reflected glare. They work especially well for skiers, fishermen, hunters, truck drivers, boaters, and other outdoor enthusiasts. ASPHERIC LENSES, SPORTS GLASSES, MOISTURE CHAMBER EYEWEAR, LOW VISION AIDS: Other lenses and specialty glasses available. Please call our office for further information. |