We know that light triggers migraines. but what about other conditions?
Light sensitivity is common to Blepharospasm – a movement disorder of the eyelids that affects an estimated 5 out of every 100,000 people, mostly women, with the average age of onset being 56. This physically and socially debilitating condition interferes significantly with visual performance, quality of life, and activities of daily living such as driving, reading, and shopping. Most sufferers of Blepharospasm report having an averse response to light.
Similar to migraine sufferers, they seek out dark rooms and avoid both ambient and bright light.
Study About Blepharospasm Treatment
A recent study was performed at the University of Utah Health Center to see if rose tinted lenses (FL-41) relieved blepharospasm better than gray-tinted lenses (i.e. sunglasses). Fifty-six blepharospasm sufferers participated in the 6 week study, with the results that FL-41 lenses provided both subjective and objective benefits. Wearing FL-41 lenses reduced blink frequency by more than 20% on average, to the point that blink frequency matched that of the control group of non-blepharospasm sufferers.
The study concluded that physicians should consider recommending this noninvasive, natural, and inexpensive tint as an adjuvant therapy to patients with Blepharospasm. Axon Optics offers the same tint used in this study. Purchase the tinted glasses here.
Blepharospasm Treatment Presentation
The link below is to an 18 minute video presentation on Benign Essential Blepharospasm, Photophobia and FL-41. It was presented by Brad J Katz, M.D. Ph.D, at the 27th International Conference and Scientific Symposium of the Benign Essential Blepharospasm Research Foundation in Irvine, California on August 8, 2009.
In the video Dr. Katz discusses the results of the 56 patient study in order to assess the efficacy of FL-41 tinted lenses in the treatment of benign essential blepharospasm.1 Video: Benign Essential Blepharospasm, Photophobia and FL-41
1 Source: Blackburn MA, Lamb R, Digre KB et al. FL-41 Tint Improves Blink Frequency, Light Sensitivity, and Functional Limitations in Patients with Benign Essential Blepharospasm. Ophthalmology. 2009. 116:997–1001, http://www.ncbi.nlm.nih.gov/pubmed/19410958