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The future of sunglass design could involve much more than shielding your eyes from ultraviolet rays; they could even be able to prevent heatstroke. An advanced sensor patch built into the nosepiece of GMI Medical Instrumentation's new TechXtreme sunglasses monitors the wearer's brain-temperature level. The results are sent wirelessly to a numerical display on a sports watch. Once developed and distributed widely, these sunglasses could save the lives of athletes, construction workers, and anyone else who faces the risk of heatstroke.