I have been using Blublockers in aviation and at daily outdoor meetings for over 30 (1986) years. Blublockers are durable and hold up well, but can get scratched if dropped from a shirt pocket. that they fit well over standard glasses or glasses, making them easy to put on and take off. Blueblockers do not put any noticeable strain on the wearer's nose. Finally, blueblockers help in hazy, foggy and poor visibility conditions, and especially when piloting an airplane. Vehicles, their blue LED lights can be difficult to see. This only happens when specific LEDs emit specific blue light. Therefore, be careful when approaching police vehicles. Red and yellow spectra are not affected. Finally, of course, I wish that blue blockers didn't cost as much as they do now. They used to be a lot cheaper and you could buy them at Walmat, Kmart and many other stores.
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