A Look at Lens Materials by Jenean Carlton, ABOC, Eyecare Business
Given all the considerations of lens materials, how do you make a decision about the best lens material for your patients? First, learn about the patient’s prescription and lifestyle needs and then research data about materials.
Index of Refraction: Index of refraction indicates how readily a lens material will refract a bean of light. The higher the index of refraction, the more the material will bend light rays. The higher the index of refraction, the thinner the lenses can be processed. Plus power lenses are thinner in the center when fabricated and minus lenses are thinner on the edges.
Abbe Value: White light is made up of the visible spectrum of wavelengths from 380nm to 760nm, with each wavelength corresponding to different colors of light. The higher the Abbe value of a material, the less likely it is to have problems with dispersion or chromatic aberration, which is perceived as color fringing or off axis blurring in the lens periphery.
Specific Gravity: Specific gravity is a measurement that determines a lens material’s weight. The lower the density or specific gravity of a material the lighter it will be when fabricated into a lens.
Reflectance: All lenses reflect at least a small percentage of light; some reflect a significant amount depending on the refractive index of the material. The higher the materials refractive index, the greater the percentage of light reflected from the lens surfaces. (END ARTICLE)
At Optical Dynamics, our clearLIGHT advantage lens combines the best of all attributes:
Since our AR chemistries rely heavily on nanoparticles to give them toughness and the right optical properties, they require a little more care than our other materials. To figure out how long they last we did long-term testing here at high, low, and room temperatures. We also thought about what they’d go through in normal storage and shipping. If you use your AR chemistry by the expiration date we expect your lenses to perform just as ours do here. If it’s past the expiration date or was stored incorrectly things aren’t as predictable.
Spending a long time at extreme temperatures or even just sitting around will eventually cause the nanoparticles to stick together. Once that happens their properties change and so do the coatings that are made with them. Expired chemistry can give you hazy coatings or ones that aren’t nearly as tough as they should be. It can also clog up the dispense filters in your nanoCLEAR unit or cause other coating defects like comets.
If we didn’t have to have an expiration date we wouldn’t use one. At this time nanoparticle-based liquid chemistries of all kinds just tend to have shorter shelf lives than those without them. If we figure out a way around it, you can bet we’ll use it. For now though, the expiration date is something we need.
The Q-2100 Digital Lens System is a green alternative as compared to traditional lens surfacing. With the Q-2100 lenses are produced direct from the bottle of liquid lens material to the finished Rx. No longer must one inventory hundreds of lens blanks to be processed to the finished prescription. A single bottle of lens material is all the operator needs to make any Rx within a broad range. Whether you need a plus lens, a minus lens, a progressive or a flattop you produce what you need in the quantity you need it.
More importantly, the digital casting process eliminates the large amount of waste typically associated with traditional lens surfacing. Lenses are not made into thick semi-finished “hockey pucks” to be ground and polish to the finished Rx. This eliminates all the polishing slurry and lens material waste that needs to be filtered, cleaned, and properly disposed as part of the existing lens manufacturing process. When optical practices process lenses in house, the traditional transportation by-products in the channel of distribution are also reduced.
“Optical Dynamics digital lens fabrication system is a greener alternative to traditional lens manufacturing,” states Michael Yager, VP of Sales. “Our system is environmentally friendly, has a very low carbon footprint, low power consumption and can be safely operated in an eyecare professional’s environment. At Optical Dynamics we continue to search for the best alternatives for all our new product designs,” added Yager.
The Q-2100 Digital Lens System occupies little space, is clean, quite and self diagnostic. With the additional benefit of producing free form quality lenses the system is an ideal choice for the progressive optical practice.
Showing patients gratitude should be a year round affair. Giving your patients the recognition that they chose you, when they could have chosen any other eyecare professional out there reinforces that they made the right decision. It builds trust, loyalty, and goodwill and they will certainly remember it when its time for their next eye exam.
Here are some easy ways to show gratitude using digital marketing:
Create a nice thank you graphic that can be sent by email or as a post card after a visit.
Run a Facebook thank you campaign
Share for them. Help your patients to succeed in their endeavors by liking their Facebook pages, sharing content and reciprocating.
Hold a customer appreciation day in which you offer discounts or giveaways for loyal customers and spread the word through an integrated campaign on Facebook, email, website ads and direct mail.
Respond to reviews, both good and the bad. Thank those that leave positive reviews and those that complain as well…
Did you know Optical Dynamics offers a full array of extended warranties for your Q-2100 and nanoCLEAR AR units? It is our goal to offer the most comprehensive and value added warranties possible. Warranties that allow you to keep your equipment in tip top shape should you experience a technical issue and warranties that provide a value even if you do not need to use them for service reasons.
The nanoCLEAR AR Extended Warranty & Maintenance Contract Includes the Following Benefits:
Repair parts (nanoCLEAR AR, Wash Module, PC and Dispense Stand), labor, ground shipping both ways, and loaner program if available
If unit does not need to be serviced during the 1-year warranty period, the purchase of the warranty allows for the return of the nanoCLEAR AR unit and dispensing stand to Optical Dynamics for preventative maintenance, including cleaning, inspection & software upgrades***
50% discount on cast lenses through RTE (+$18 w/AR), during down time due to repair
Access to our loaner program if loaner AR unit is available
** Does not include spin bowls (upper & lower), hepa filters, foam pre-filter for hepa, wash nozzles, wash filter, suction cup seal ring, syringe cap o-ring, plastic deck plate, arm sneeze guard & strobe lamp, consumables, expedited shipment or preventative maintenance on PC or wash module This warranty will be void in its entirety as to any parts or equipment covered hereunder in the event of damage caused by abuse. All repairs necessitated by damages excluded from this warranty will be charged to the customer
*** Includes free software upgrades only; new product software upgrades must be purchased
It can be tempting to try to save a few pennies by using industrial chemicals or household cleaners to clean molds and lenses. Unfortunately there’s no way to know exactly what’s in a lot of these cleaners or to be sure that you’ll get the same thing twice even if you buy the same product. “Simple” things like denatured alcohol aren’t safe either; there are hundreds of different denaturing chemicals and processes. How these things will affect the casting process and equipment isn’t easy to predict.
Our cleaners use the minimum number of ingredients necessary to get the job done. There are no colorants or scents added. Since we control the formulations, we also ensure that only high-purity components go in them. It’s the only way we can be sure they will be effective while also being friendly to your molds and lenses. If you stick with our cleaners you don’t have to worry about contaminating your molds, affecting the casting process, or damaging your lens coatings.
Optical Dynamics is pleased to welcome Optica Full Vision to the Optical Dynamics family.
Located in Cuenca, Ecuador, Optica Full Vision leads the future of optics in the country. With state-of-the-art facilities, the best professionals, products and services, they are proud to add onsite lens production to their optical laboratory.
As listed on their website, “Our obsession is to take care of your eyes and your look.” “We care about the aesthetics of our clients and use the highest quality for the production of our products.” With the addition of the Q-2100 and nanoCLEAR AR, patients will no longer have to wait days or weeks for their eye wear.
Opting to carry a full array of products, their patients will have a wide choice of lens options with just-in-time-delivery.