BlockBlueLight UK

They are dedicated to delivering the world's most optimal and science backed blue light glasses, and blue blocking lighting solutions, aiming to alleviate digital eye strain, improve sleep, and optimise health through mitigating the harmful effects of artificial light from screens, devices, and LED & fluorescent lighting.
All of BlockBlueLight's items are evidence based and backed by science to ensure they straighten with all the latest academic study on light and health.
BlockBlueLight have helped over 25,000 consumers repair their sleep, eliminate headaches & eyestrain, and improve overall health & wellbeing. They are thought about the world's leading professionals' in creating the best blue light glasses and sleep friendly lighting products that really work.

• https://www.blockbluelight.co.uk