Optical Prism September 2016 | Page 23

Going without shades can also make the eyes hypersensitive to light and can cause other temporary issues like swelling. But, the report points out, damage from UV rays is cumulative and so prolonged exposure can lead to far more serious issues, like cataracts, that can lead to vision loss. Many of the problems can start out symptom-free. The Vision Council says sunglasses are the “unsung hero” of North American accessories. They are essential, it says, to maintaining healthy vision. “With just two small lenses, and sturdy, comfortable frames, the right sunglasses accomplish many feats that pair protection and style,” the report says. “They shade uncomfortable bright light and enhance contrast. Available in all shapes and sizes, they can help improve performance during sports and exercise, while sprucing up personal style. But most importantly, when used as directed, these small but mighty accessories can filter out the harmful ultra-violet radiation that penetrates and damages eyes.” The Vision Council says consumers must ensure their shades protect against UVA and UVB radiation. That's something that only 44 per cent of respondents to the VisionWatch survey say they are concerned about. "Many consumers make sunglass purchases based on style and comfort, but fail to check the label to make sure lenses are UVA/UVB protective," Daley says. The survey also found that: 39 per cent of respondents only reach for their sunglasses when they are outside for two or more hours, even though UV damage can start in as little as 15 minutes; when it comes to buying shades, more people are concerned with fit (65 per cent) and affordability (54 per cent) than UV protection (44 per cent); and 34 per cent of people have experienced symptoms of prolonged UV exposure, such as eye irritation, trouble seeing and red or swollen eyes. The Vision Council says an annual eye exam is critical to keeping eyes healthy, as they can diagnose early signs of damage from UV exposure, when it's most treatable. The full survey can be found at www.thevisioncouncil.org. Optical Prism | September 2016 23