Concept

Price of sunglasses

What a pair of sunglasses costs, which these sources say does not tell you its UV protection.

4 links, 1 backed by primary records

How each side tells it

Connections 4

UV protection in sunglasses According to National Eye Institute Primary record 1
Advice, not a test result.
UV protection in sunglasses According to American Academy of Ophthalmology Scholarship & press 2
Advice: the label with a UV claim matters, not the price.
UV protection in sunglasses According to Giannos and others (2019): UV and violet-light filtering of eyewear Scholarship & press 3
A lab test of 28 sunglasses and lens blanks in six groups, with a focus on violet light; the authors report some designer pairs did not filter as promoted. One lab, not a market survey.
UV protection in sunglasses According to Serizawa and Heacock (2014): UV transmittance of sunglasses in Vancouver Scholarship & press 4
35 unused pairs in Metro Vancouver: 11% failed the 4% transmittance limit, with no statistically significant link to price or to UV claims. A small student study.

Proof 4 sources

Protecting your eyes from the sun’s UV light, National Eye Institute, 5 Jul 2022. Primary record
Don't assume that expensive, designer sunglasses provide better UV protection than sunglasses available from grocery stores or discount vendors.
How to Choose the Best Sunglasses to Avoid Sun Damage, American Academy of Ophthalmology, 20 Jul 2026. Scholarship & press
Drugstore sunglasses labeled as 100% UV-blocking are a better choice than designer sunglasses with no protection.
Spectral Evaluation of Eyeglass Blocking Efficiency of Ultraviolet/High-energy Visible Blue Light for Ocular Protection, Optometry and Vision Science (American Academy of Optometry), 2019. Scholarship & press
The ultraviolet and high-energy violet (400 to 450 nm) light–filtering efficiency varied between sunglasses and clear lenses and did not correlate with price or advertised claims.
UV transmittance in market place sunglasses and their adherence to established standards, Environmental Health Review (British Columbia Institute of Technology), 2014. Scholarship & press
Statistically significant associations, using Chi-squared analysis, could not be found between transmittance test results and price category, UV protection claims, or the type of UV protection claim

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