One thing I think we often fail to recognize is that the practice of contact lenses is quite diverse around the globe. For example, in most markets, contact lenses are heavily regulated, while in others, regulation is much less stringent. Likewise, material and modality trends differ markedly in various part of the world as does the prescribing of contact lenses. As with anything, I think there is a tremendous insight when looking at the way other global regions differ in these trends. We will bring more worldwide insights into the contact lens market in the months to come.
Jason J. Nichols, OD, MPH, PhD
Biofinity XR Toric Now Available Nationwide
CooperVision, Inc. announced the expanded availability of Biofinity XR toric, the latest addition to the company’s Biofinity range of monthly silicone hydrogel contact lenses. The product, first announced in January, was initially introduced to select practices as manufacturing ramped up. Now, Biofinity XR toric is available to all eyecare practitioners and their patients throughout the United States.
The Biofinity XR brand is the only silicone hydrogel contact lens range from a major manufacturer designed for patients with prescriptions beyond the traditional stock range, according to the company. Biofinity XR toric is a fully cast molded made to order lens that incorporates the same uniform horizontal ISO thickness and optimized ballast band design as Biofinity toric, making it an easy-to-fit, stable toric lens with excellent visual acuity.
Like all Biofinity lenses, Biofinity XR toric features Aquaform Technology, which allows more oxygen to reach the eyes, helping to maintain clear, white eyes and healthier corneal physiology. The lens material is naturally and uniformly wettable, providing a soft and flexible lens.
Biofinity XR toric lenses are available in sphere powers from +10.00D to -10.00D (0.50D steps after +/-6.00D), with cylinder powers from -2.75 to -5.75 (0.50 steps) and an axis of 5 degrees to 180 degrees in 5-degree steps, and +8.50D to +10.00D with cylinder powers from -0.75 to -2.25 (0.50 steps) and axis of 5 degrees to 180 degrees in 5-degree steps.
Click here for more information on Biofinity XR toric.
Victor J. Connors, OD, a past president of the American Optometric Association (AOA), passed away on June 6, 2016, at the age of 68. Dr. Connors graduated from Illinois College of Optometry in 1971 and opened a private practice that same year in Middleton, WI. Dr. Connors became an active civic and philanthropic leader, and was elected president of the Wisconsin Optometric Association in 1987. He was instrumental in helping doctors of optometry gain prescribing privileges in Wisconsin and other states. He was elected the 82nd president of the AOA in 2003.
Dr. Connors was influential in launching Optometry Giving Sight in the United States, serving as CEO between 2005 and 2010. In 2006, Dr. Connors was elected president of the World Council of Optometry (WCO), representing 78 member organizations and 250,000 doctors of optometry worldwide.
Special Offers for Recent Grads from Visionary Optics
Visionary Optics, the manufacturer of the Jupiter, Europa and Elara brands of scleral contact lenses, announced a new program including special offers for graduating or recently graduated optometrists in the U.S. and Canada. Qualifying optometrists will have access to deeply discounted fitting sets and Rx lenses. To register for these special offers and get started with Visionary Optics scleral lens designs, visit http://www.visionary-optics.com/visionary-od-program.
See Your Interesting Case Photo Here in the Next Issue
Have you seen an interesting case lately? Would you like to share it with your colleagues? An image from that case could appear in Contact Lenses Today in the coming weeks!
We welcome photo submissions from our readers! It is easy to submit a photo for consideration for publishing in Contact Lenses Today. Simply visit http://www.cltoday.com/upload/upload.aspx to upload your image. Please include a detailed explanation of the photo and your full name, degree or title, and city/state/country.
As eyecare providers we often put our patients into glasses or contact lens wearing buckets. Despite my greatest efforts, I still find myself forgetting to discuss contact lenses to my glasses wearing patients or glasses to my contact lens wearing patients. As the fire ball in the sky is starting to reveal itself more abundantly around the northern hemisphere, I also have to add sunwear to the discussion.
Sunwear is a big business. The statistics for the number of patients who go and buy non-prescription sunwear following their first contact lens fitting has been seen by all of us and is no-doubt staggering. The fact that we are not capitalizing on this better in our practices is very myopic of us. The sale of sunwear in our practices goes much beyond the approach of a “sale” of a product; it reaches into the education sphere. I don’t have an abundance of time to educate my patients about all things UV so I utilize my team to share key messages about sunwear. Whether you sell eyewear in your practice or not, please keep in mind that the long term visual welfare of our patients relies on us educating them on the importance of protective UV blocking and protecting sunwear in addition to their contact lenses.
CARE SOLUTION CORNER Andrew D. Pucker, OD, PhD, FAAO
Swimming with Contact Lenses
Swimming pools, water parks, and trips to the beach may all be in your and your patients’ near futures. As the weather warms and we start to think about outside fun, we also need to think about the health and safety of our contact lens wearers. Swimming in contact lenses should be a concern for all contact lens wearers because swimming is known to increase one’s chances of contracting vision-threatening infectious keratitis.1 In fact, swimming in contact lenses is such a concern that the FDA has recommend that contact lens wearers remove their contact lenses before swimming.2
Infectious keratitis is a concern for swimmers because microorganisms (e.g., bacteria, amoeba) in the water bind to contact lenses and increase one’s chances of infection.3,4 This appears to be the case for both chlorinated swimming pools and untreated swimming water (e.g., lakes, ocean).3,5 There also appears to be no difference in bacteria binding to contact lenses while swimming with respect to hydrogel or silicone hydrogel materials, though there is some evidence that Acanthamoeba may have a higher affinity for first generation silicone hydrogel materials compared to second generation silicone hydrogel and hydrogel materials.3,5,6
While it may seem easy to tell your patients to not wear their contact lenses while swimming, you will likely find many patients hesitant to take this advice, especially because many patients primarily rely on their contact lenses for good vision and because we have fit many of them in contact lenses specifically so it is easier for them to play sports.5 Our loyal contact lens wearers may best benefit from wearing daily disposable contact lenses that they can discard directly after swimming. Alternatively, swimming goggles have been shown to help protect against unwanted microbes, so this could also be a good option for your water sport enthusiasts.5 Overall, we need to provide our patients with the best recommendations possible, so they can make good decisions about their ocular health.
1. Radford CF, Minassian DC, Dart JK. Acanthamoeba keratitis in England and Wales: incidence, outcome, and risk factors. Br J Ophthalmol. 2002;86:536-542.
2. U. S. Department of Health and Human Services. U.S. Food and Drug Administration (FDA). Focusing on Contact Lens Safety: 2016. Available at: http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm048893.htm. Accessed on 5/25/2016.
3. Choo J, Vuu K, Bergenske P, Burnham K, Smythe J, Caroline P. Bacterial populations on silicone hydrogel and hydrogel contact lenses after swimming in a chlorinated pool. Optom Vis Sci. 2005;82:134-137.
4. Vesaluoma M, Kalso S, Jokipii L, Warhurst D, Ponka A, Tervo T. Microbiological quality in Finnish public swimming pools and whirlpools with special reference to free living amoebae: a risk factor for contact lens wearers? Br J Ophthalmol. 1995;79:178-181.
5.Wu YT, Tran J, Truong M, Harmis N, Zhu H, Stapleton F. Do swimming goggles limit microbial contamination of contact lenses? Optom Vis Sci. 2011;88:456-460.
6. Beattie TK, Tomlinson A, McFadyen AK. Attachment of Acanthamoeba to first- and second-generation silicone hydrogel contact lenses. Ophthalmology. 2006;113:117-125.
Effects of Wearing a Daily Disposable Lens on Tear Film: A Randomized Controlled Trial
Contact lens-induced dry eye is commonly encountered, although its extent is not well documented with daily disposable lenses. A novel type of contact lens system incorporating moisturizing agent (alginic acid) has been developed. The aim of this study was to evaluate the effect of wearing daily 2-hydroxyethyl methacrylate disposable contact lenses for seven days on tear stability, conjunctival and limbal redness and dry eye symptoms. Then, we aimed to determine whether lens solutions containing alginic acid had any influence on tear parameters.
This was a seven-day parallel group double-masked clinical trial of previous contact lens wearers, where participants were randomly assigned to wearing SEED 1dayPure moisture contact lenses with (n = 15) or without alginic acid (n = 15). Tear lipid layer thickness (LLT), non-invasive tear break-up time (NIBUT), conjunctival redness, corneal fluorescein staining, tear break-up time and Schirmer I readings were measured. Symptom severity and frequency were evaluated and combined using a global score from visual analogue scales.
The mean age and standard deviation of the participants was 25 ± 3.8 years. There were 24 females and six males. After reintroduction of contact lens wear for one week, there was significant improvement in the global symptom score; however, this may not be clinically significant. There were small and clinically insignificant changes in limbal and conjunctival hyperemia but no significant changes in lipid layer thickness, Schirmer I and NIBUT in overall participants. The use of alginic acid in lens solutions did not affect these parameters compared to control lenses (p > 0.05).
After seven days of wearing a modern daily disposable lens, there was no significant deterioration of tear function in a group of young contact lens wearers. In this short-term study, there was no evidence of significant benefit of lens solutions containing alginic acid used with HEMA lenses.
Chong PQ, Yeo S, Too CL, Boo C, Tong L. Effects of wearing a daily disposable lens on tear film: a randomized controlled trial. Clin Exp Optom. 2016 May. doi: 10.1111/cxo.12357. [Epub ahead of print]