THIS WONDERFUL WORLD OF LENSES

By Andrew Karp
A growing body of research indicates that exposure to ultra violet and High Energy Visible (HEV) light from sunlight and digital devices, particularly short wave blue light, can be harmful to our eyes. A number of spectacle lens manufacturers introduced products at last month’s International Vision Expo West in Las Vegas that are designed to attenuate those potentially dangerous rays.

Essilor


Essilor’s Crizal Prevencia No-Glare lenses selectively deflect the harmful band of blue-violet light and UV, while allowing beneficial visible light to pass through. Crizal Prevencia lenses have exclusive Light Scan that selectively filters out harmful blue-violet and UV light and allows beneficial light to pass through (visible light, including blue-turquoise) while maintaining excellent transparency (clear no-glare lens) for optimal vision. Crizal Prevencia lenses also provide protection against glare, scratches, smudges, dust and water while maintaining excellent transparency.

VSP Optics Group


VSP Optics Group featured Unity with BluTech lenses. The lenses contain the two main natural eye protectants—ocular lens pigment and melanin—in the optimal ratio to filter UV and harmful blue light while preserving natural color perception. The proprietary formula is infused directly into the lens itself to ensure the best replication of the eye’s natural protection. Unity with BluTech (High Impact 1.56) lenses offer indoor and outdoor options, are fully compatible with Unity Performance coatings and are available in most Unity products.



PFO Optima

iBlu coat by PFO Optima is an anti-reflection coating specially developed to protect eyes from harmful UV and blue light, improving contrast and reducing eye fatigue. iBlu coat lenses filter blue light to a high degree of efficiency from both front and back reflected light. iBlu coat lenses are perfect for students, professionals, gamers or anyone who spends time in front of computer screens or other digital devices. iBlu coat is available on distortion free Resolution stock lenses and all PFO free-form PAL and SV lenses.




Hoya Vision Care


Hoya Vision Care introduced Recharge EX3, a lens treatment designed to protect eyes from the straining effects of the digital devices. Recharge has all the benefits of Hoya’s Super HiVision EX3, including substrate matching technology, and has the same over-all transmittance, while reducing blue light by 10 percent compared to conventional AR treated lenses. The treatment optimizes transparency, and has the same scratch resistance properties as Super HiVision EX3.

Quantum Innovations


Retinal Bliss DES from Quantum Innovations is a coating combination designed to address the factors that can create Digital Eye Strain. The coating for the front of the lens is specially formulated to be selectively reflective, which helps to reduce the intensity of light associated with LED technologies—blue light—while addressing environmental light issues as well. The coating for the back side of the lens is Quantum’s Retinal Bliss HEV, the only AR that addresses the harmful and irritating effects of HEV (High Energy Visible) and UV light, dramatically reducing backside reflection of both.



Polarized Lenses
Essilor
Essilor’s Xperio UV lenses eliminate blinding reflective glare while providing the maximum UV protection on both the front and backside of the lens. Xperio UV lenses are the only lenses to offer an Eye-Sun Protection Factor (E-SPF) of 50+, which provides at least 50 times more protection from dangerous UV radiation compared to wearing no lenses at all. Other benefits include the elimination of 100 percent of blinding reflective glare; up to three times more scratch-resistance than competitive polarized lenses, easy cleaning and 100 percent UVA/UVB protection.





Younger Optics


Patients with higher prescriptions can benefit from Younger Optics’ improved NuPolar high index 1.67 single vision lens, which is now available in an expanded selection of colors and base curves. Made with MR-10 material, NuPolar 1.67 lenses are available in eight base curves from 1.25 to 8.25 for excellent visual acuity. Offered in gray, brown and green, each NuPolar lens color is formulated so that patients maintain good color recognition. All NuPolar lenses block 100 percent of UVA and UVB light, offer high polarization efficiencies, and are very suitable for digital lens processing. Precise film placement allows for minimum thickness in a wide range of prescriptions.

Photochromic
Transitions
Transitions Optical announced the creation of a brand new photochromic technology, Chromea7, which will be introduced in the release in January of their latest photochromic lens, Transitions Signature VII. This new dye formulation allows the lens to be more reactive to indirect sunlight and reflected sunlight, becoming even darker on hot days. Transitions VII replaces Transitions VI and will be available January 7, 2014. The new lens is more responsive in more situations and will be offered in gray and brown. Benefits include: better darkness outdoors; improved responsiveness in more situations; speed of activation and fadeback as good as Transitions VI; and excellent clarity indoors and at night. In wearer tests, Transitions Signature VII lenses were preferred two to one over Transitions VI lenses. Industry professionals can visit www.TransitionsSignature.com to learn more about the product and order a free launch kit.

Vision-Ease Lens

Vision-Ease Lens’ ChangeRx plastic photochromic lenses combine lightweight comfort with superior photochromic performance and an affordable price point. Photochromic molecules are embedded throughout the plastic lens monomer, not bonded or coated to the surface, resulting in fast, uniform reactivity when exposed to UV light. ChangeRx lenses provide 100 percent UVA and UVB protection, and are available in semi-finished single vision coated and uncoated, with gray and brown color options. The lenses are an ideal solution for direct surfacing needs with availability in one diopter step base curves with a 75mm diameter, according to Vision-Ease.

Specialty Lenses
Carl Zeiss Vision
Among the other noteworthy new lenses that were introduced at Vision Expo West was Carl Zeiss Vision’s Zeiss Officelens, a new customized lens for office work, digital device use, and other activities that rely heavily on near-to-intermediate vision. Unlike traditional “computer” lenses, Zeiss Officelens allows ECP’s to specify the wearer’s intermediate working distance for the lens. This is accomplished simply by choosing one of three options: Book (clear vision to 3ft/100cm), Desk (7ft/200cm), and Room (14ft/400cm.) Zeiss Officelens is customized for the wearer’s prescription and employs an automatic variable corridor to assure that the patient has the widest possible fields of vision and the best balance of near and intermediate. Zeiss Officelens will be available in hard resin, Trivex, polycarbonate, 1.67 and 1.74.

Shamir
Shamir launched two new lenses, at Vision Expo West, for keeping the office in perfect focus; Shamir Computer and Shamir WorkSpace. Shamir Computer has a wide field of near viewing with clear vision up to five feet, while the Shamir WorkSpace is the best solution when the priority focus is both mid-distance and near viewing. It’s near distance field of viewing is not as wide as the Shamir Computer, but its mid-distance is 10 feet instead of five. Both lenses take advantage of Shamir’s Freeform technology including Natural Posture and IntelliCorridor. Shamir Computer and Shamir WorkSpace will be available in 14mm fitting heights and in a wide range of materials. Shamir’s original occupation lens, Shamir Office, is still available as a general work space lens, while Shamir Computer and Shamir WorkSpace offer more customized solutions for a wider range of occupational uses. For more information contact Shamir at 877-514-8330 or visit their Website at www.Shamirlens.com.

X-Cel Optical
X-Cel Optical introduced Tribrid lenses in semi-finished single vision clear and Transitions. Tribrid lenses were developed by PPG’s optical products business using a hybrid approach merging elements of the chemistry for Trivex lens material with traditional high-index lens chemistry. The result is a high-index lens that provides the patient with a superior combination of performance benefits.

Suited to patients with higher prescriptions within the +/-3.00 to +/-7.00 diopters range, Tribrid material features optical clarity (Abbe number 41), lightweight comfort (density 1.23 grams per cubic centimeter), thinness (refractive index 1.60), impact resistance (withstands more than 160 times the energy of the U.S. Food and Drug Administration drop ball test) and protection (100 percent protection from ultraviolet radiation [UV]). Tribrid lenses are compatible with digital, free-form processing and anti-reflective coatings.

Younger Optics


Another new lens that is optimized for patients with high prescriptions who want minimal lens thickness and cosmetically appealing eyewear is Younger Optics’ Ultra-Thin High Index 1.74 lenses. Thinner lenses give these patients broader frame selection, and high index 1.74 lenses are a good option for drilled rimless eyewear.


Low Vision
Eschenbach
Low vision patients can benefit from Eschenbach’s Mobilux LED line, a 24-diopter option that fills the gap between the 20D and 28D powers in Eschenbach’s line of hand held magnifiers. Like the other Mobilux magnifiers, the 24D version features a lens that has a patented cera-tec coating which makes the lens nearly glass hard and resists scratching by up to 50 percent. The magnifier uses a bright, SMD LED for illumination, the color of which can be changed by snapping on either a yellow or orange filter over the light, thereby reducing glare and increasing viewing comfort as needed. The Mobilux also uses a special step-up converter that regulates the power sent to the LED ensuring that there is consistent illumination provided over time—and doing so with an efficiency level of 80 percent. A protective lens cover and two AA batteries are included. The Mobilux is covered by a lifetime warranty against any manufacturer’s defect.

CURRENT ISSUE


May/June LabTalk 2017