How much UV is absorbed by a tinted CR-39 lens?

The correct answer reflects the ability of tinted CR-39 lenses to absorb ultraviolet (UV) radiation effectively. CR-39, a material commonly used in eyeglass lenses, provides inherent UV protection. Tints applied to these lenses enhance their capacity to block UV light.

When it comes to the percentage of UV absorption, tinted CR-39 lenses are generally known to absorb about 55% of UV radiation. This absorption rate is significant, offering wearers a degree of protection against UV-related damage, such as cataracts and other eye problems linked to sun exposure.

Understanding the properties of different lens materials, specifically in how well they can absorb UV light, is crucial for making informed choices about eyewear and eye health.