Every eyecare professional’s dream is to offer distortion-free eyewear to their patients. After all, clear, undistorted vision is what patients want too. HOYA VISION CARE, North America (also known as HOYA, the Free-Form Company) has recently introduced a very clever approach to attaining this goal with its new HOYA DF eyewear system.
HOYA has launched what it claims is the first stress-free three-piece rimless eyewear system. In partnership with Avantek, a new pressure-free rimless mounting design offers what the company maintains is some of the widest peripheral views attainable in a pair of eyeglasses. This is done by incorporating a unique rimless design with HOYA’s Phoenix free-form lenses and an anti-reflective (AR) treatment—all rolled into one attractive pair of eyeglasses.
The majority of rimless mountings incorporate bushings to attach drilled lenses to the chassis. While this method is effective, it requires drilling the lenses at several points and securing them. This creates stress, resulting in additional distortion around these mounting areas. Rimmed eyewear creates internal stress in lenses because of the pressure the rims exert around the circumference of the lenses.
Hoya’s patented, unique Avantek frameless mounting eliminates the distracting drill mounting points from the viewer’s field-of-view by attaching the bridge and temples directly to the sides of each lens. This means that there is no drilling through the lenses and no bushings or other mounting hardware; instead there are small tabs on the nasal and temporal sides of each lens. The tabs do not use an adhesive and are not added to the lens—they are milled down from the larger uncut lens during the edging process, creating a very solid one-piece construction.
The process significantly minimizes obstructions commonly caused by drill mounting points and hardware. Because of this, HOYA claims wearers can view through the entire lens surface, widening the periphery, creating distortion-free and obstruction-free vision. Since there are no screws or other sharp and pointy hardware securing the lenses, cleaning cloths will no longer become snagged.
Each frame in HOYA’s DF collection is constructed of an optimized titanium alloy created for eyeglasses and other medical devices exclusively. This material is very rigid, similar to surgical titanium, making it an ideal choice for a frameless mounting. There are eight color chassis options to select from, as well as eight lens shapes. Each style can be mixed and matched, offering 64 combinations within each kit of eight frames.
HOYA uses its Phoenix lens material because it is inherently very clear and has a high Abbe value of 43. It also has a high tensile strength that exceeds impact-resistance standards, making it an ideal choice for any three-piece mounting. In addition, the company uses its proprietary free-form technology with these lenses along with its SUPER HiVision EX3 AR treatment. Hoya DF lenses are available in free-form single vision, progressive, and polarized single vision options.
The company has taken distortion-free eyewear to a whole new level. Sometimes less really is more—less distortion and less eyewear weight, that is!
Francis Gimbel, Jr. is a licensed optician and owner of Gimbel Eye Associates in Wayne, PA.
WHERE TO FIND IT
HOYA VISION CARE, North America
877-528-1939 • hoyavision.com