Mercer TheraSpecs offer a subtle, rectangular profile with a gently sloping brow for versatile fashion. Mercer also combines an ultra-lightweight design with a highly protective fit; the frame is made of TR-90 and features wider lenses to cut down on the most problematic light from the front and side, while the arms use flexible, aluminum materials that reinforce its universal appeal. Mercer is available in black with a matte finish.
Mercer TheraSpecs come with a case and a microfiber cleaning cloth.
Measurements:
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| Hinge-to-Hinge | Lens Width | Bridge Width | Temple Length | Lens Height | Weight (all lenses*) |
Weight (FL-Sun only) |
| 138mm | 53mm | 17mm | 141mm | 36mm | 17g | 19.5g |
*Weight (all lenses) column is for all lens options except FL-Sun.
Tap or click to switch models:
Model wearing FL-Pro, Standard Strength
Our Lightest Frames
This frame is among the most lightweight in our catalog. While the majority of TheraSpecs frames can be considered lightweight (27g or less), these frames have been specially designed to reduce pressure on the head and face for the most sensitive.
Mercer also features flexible temples for an exceptionally comfortable fit.
TheraSpecs are the protective cornerstone that your toolkit needs to reduce unwanted light. We offer a full catalog of specialty lens options and strengths for your sensitivity to light, so you can make sure they fit in perfectly with your lifestyle. From various FL-41 lenses and polarized sunglasses lenses to dedicated sleep lenses and lenses that filter irritating blue light, we have you covered for every situation or adventure.
Our range of lenses were developed based on an extensive review of existing peer-reviewed research on lighting and the filtering of specific wavelengths, which means you can find the right glasses to help you take on whatever problematic lighting you face.1-5 Plus, our glasses are also frequently recommended by neurologists, physical and occupational therapists, and other sensory sensitivity specialists for their light-sensitive patients.
Try the glasses that can help protect you against:
Phone, computer, and other device screens
Fluorescent and/or LED lighting
Flashing lights and/or repeating patterns
Disruptive blue light
Sunlight and outdoor glare
Headlights while driving at night
Other bright and/or harsh lighting
Our Impact
TheraSpecs customers come to us with a variety of different causes and experiences related to their light sensitivity, and they tell us how our glasses have changed their lives, helping them enjoy the things they love without the interference of light.
Feel the TheraSpecs difference and embrace light with confidence!
More Than Just Glasses
With TheraSpecs, you're getting more than a pair of glasses. From the careful design and testing of each lens to the support of our customer care team, TheraSpecs has you covered. Plus, TheraSpecs include:
- Premium anti-scratch, anti-smudge, and anti-reflective coatings, as well as 100% UVA/UVB protection
- A complimentary protective case and microfiber cleaning cloth
- Domestic and international shipping options, including FREE US shipping
- A 60-day return and exchange guarantee
Each one of our specialty tints is designed to filter unique wavelengths of light to deliver the right kind of protection for your needs. Note: In addition to providing support for different types of light sensitivity, TheraSpecs may also help people to live well with migraine by reducing their exposure to problematic light, as part of an overall light management plan.
Further customize your TheraSpecs lenses by choosing from a variety of lens tint strengths and/or by adding prescription or reader correction.
TheraSpecs Lens Options
(Available with or without prescription or as readers)
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FL-Pro™
Strongest FL-41 protection for artificial lights and digital device screens.
Great for: Moderate or severe sensitivity to fluorescent lighting, screens and other artificial sources -
FL-Blend™
Balances FL-41 protection against screens and other artificial light with more natural color perception.
Great for: Moderate sensitivity to artificial light, and for people wanting a more subtle lens than FL-Pro -
Z-Blue™
Protects against flashing lights and repeating patterns.
Great for: General photosensitivity, non-fluorescent light sensitivity, disorienting and/or flashing visual stimuli -
Flex
Takes the edge off harsh light with a barely-visible tint.
Great for: General computer or screen use, night driving use, and mild light sensitivity -
Sleep
Blocks 100% of blue light which may affect sleep patterns and melatonin production.
Great for: Wearing 2-3 hours before bed to protect from artificial light exposure and help with sleep -
Contrast HEV™
Filters the high-energy visible light that our eyes don’t focus well.
Great for: Night driving use and improving comfort and contrast from screens, bright lights -
FL-Sun™
Dark, polarized FL-41 lens for the best sunglasses you’ve ever tried.
Great for: Sunlight and outdoor glare management and light sensitivity protection outside and/or while driving during the day -
References:
1Good PA, Taylor RH, Mortimer MJ. The use of tinted glasses in childhood migraine. Headache. 1991 Sep;31(8):533-6
2M. Tatsumoto, T. Eda, T. Ishikawa, M. Ayama, K. Hirata Light of Intrinsically Photosensitive Retinal Ganglion Cell (ipRGC) Causing Migraine Headache Exacerbation. IHC symposium OR3. 2013 June
3Wilkins AJ, Nimmo-Smith I, Slater AI, Bedocs L. Fluorescent lighting, headaches and eyestrain. Lighting Research and Technology 1989 March;21(3) 1 11-18
4Hermes D, Kasteleijn-Nolst Trenite D.G.A, Winawer J. Gamma oscillations and photosensitive epilepsy. Current Biology. 2017; 27(9); doi: 10.1016/j.cub.2017.03.076.
5Merezhinskaya N, Mallia RK, Park D, Millian-Morell L, Barker FM 2nd. Photophobia Associated with Traumatic Brain Injury: A Systematic Review and Meta-analysis. Optom Vis Sci. 2021;98(8):891-900. doi:10.1097/OPX.0000000000001757
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