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American Focus > Blog > Health and Wellness > Tests on sunglasses show deficiencies in protection against ultraviolet rays
Health and Wellness

Tests on sunglasses show deficiencies in protection against ultraviolet rays

Last updated: February 22, 2025 3:48 pm
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Tests on sunglasses show deficiencies in protection against ultraviolet rays
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Sunglasses are a popular accessory that many people rely on for protection against harmful solar ultraviolet radiation. However, a recent study published in the journal Research on Biomedical Engineering has raised concerns about the effectiveness of some sunglasses in providing adequate UV protection.

The study, conducted by researchers from the Ophthalmic Instrumentation Laboratory at the São Carlos School of Engineering of the University of São Paulo (EESC-USP) in Brazil, analyzed 12 models of sunglasses. The results showed that only one model met the safety limits for ultraviolet radiation exposure set by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). This finding highlights the need for improved standards in the industry to ensure that sunglasses provide adequate protection for the eyes.

It was also discovered that over time, the ability of some lenses to block UV radiation diminishes, increasing the risk of eye damage. The study emphasizes the importance of using sunglasses that meet safety standards to prevent long-term eye health issues.

Professor Liliane Ventura, the corresponding author of the article, has been leading efforts to establish safety standards and norms for sunglasses since the 1990s. Her research has been instrumental in shaping regulations that govern the quality of eye protection products.

The study recommends that the industry adopt the ICNIRP limits as standard practice to enhance the quality of sunglasses and ensure comprehensive vision protection. By extending protection to wavelengths up to 400 nm, unnecessary exposure to UV radiation can be minimized, reducing the risk of eye damage.

Ventura and her team have also developed prototypes for measuring radiant exposure of the eye and testing the blocking of ultraviolet radiation in sunglasses. These innovations aim to improve the evaluation process for sunglasses and enhance consumer awareness when choosing eye protection products.

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In conclusion, the study underscores the importance of wearing sunglasses that provide adequate UV protection to safeguard eye health. By establishing and adhering to rigorous safety standards, the industry can ensure that consumers have access to high-quality sunglasses that offer effective protection against solar ultraviolet radiation.

TAGGED:deficienciesprotectionRaysShowSunglassesTestsultraviolet
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