Blepharospasm relief with Axon Optics?
Medical research demonstrates that symptoms can be managed with Axon Optics Lenses. Before we discuss the validity of this study, the tint in question, and the disorder being studied, it is important to know what these things are.
The National Institute of Health, or NIH, is a government entity. They are “the nation’s medical research agency—supporting scientific studies that turn discovery into health”. The United States National Library of Medicine is the world’s largest library of medicine. They have thousands of articles about medicine and clinical trials. There is no more reliable source in America.
Benign Essential Blepharospasm, or BEB, is a disorder that causes involuntary spasmodic contractions of the orbicularis oculi – the muscle that closes the eyelids. It looks like a person with blepharospasm cannot stop blinking. Most people with BEB have severe photophobia, which is sensitivity to light. It is often so painful that BEB sufferers avoid light.
FL-41 is a therapeutic tint. At Axon Optics, all of our lenses are tinted with FL-41 for maximum protection against parts of the light spectrum which bother photosensitive people.
In the NIH-published article, “FL-41 Tint Improves Blink Frequency, Light Sensitivity, and Functional Limitations in Patients with Benign Essential Blepharospasm”, researchers wanted to find out the efficacy of FL-41 tinted lenses in the treatment of Benign Essential Blepharospasm (BEB).
Orbicularis Oculi, courtesy of camellia35, Flickr Creative Commons
There were two parts to the study.
In the first part, the subjects wore either FL-41-tinted lenses or Gray-Tinted lenses. After two weeks, subjects had to switch to whichever type they did not originally get.
In the second part, surface electromyography (EMG) measured force, blink frequency, and duration while the subjects wore one of three types of lenses: the gray tint, a similar-looking rose tint, and the signature FL-41 tint.
Most subjects experienced an improvement in their quality of life. They reported more comfortable reading, less light sensitivity (especially from fluorescent lights), mean blink rate, reduced eyelid contraction force, and blepharospasm that was both less-severe and less-frequent. The rates were higher with our FL-41 tint than with gray-tinted or rose-tinted lenses.
The researchers also studied subject perceptions of relief. The two studies showed that Blepharospasm sufferers benefited greatly from wearing the FL-41 Tint Lenses. They didn’t seem to benefit from the grey or the similar-looking rose tint.
It appears that people with Benign Essential Blepharospasm, or BEB, are sensitive to a certain part of the visible spectrum that other people are not. This could be due to many factors. While the exact reason that Blepharospasm sufferers are more sensitive is unknown, it is clear that these lenses help.
In a different study it was shown that FL-41 lenses reduce photophobia. It has been tested in bright full-spectrum halogen lamp test environments as well as in ‘real life’, as subjects lived their daily lives.
Axon Optics lenses work best for blepharospasm treatment when used in conjunction with other treatments, such as Botox (botulinum toxin injections), myectomy, and cholinergic medications.
The research paper concludes that “prescribing tinted spectacles is a safe, non-invasive, and inexpensive means of improving BEB symptoms. Because a sufficient number of participants derived benefit from the FL-41 tint, we recommend that physicians offer their patients this option for BEB symptom control.”
The original research can be viewed here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2701948/