Home » BBC News - Technology » technology news » 'Switch-off sunglasses' block out screens 'Switch-off sunglasses' block out screens Unknown 3:13 AM BBC News - Technology technology news Could a pair of sunglasses that can block out TV screens help us switch off? from BBC News - Technology https://ift.tt/2DV5hq3 Share: Facebook Twitter Google+ StumbleUpon Digg Delicious LinkedIn Reddit Technorati