Theraspecs

Hi @deb74 some tints are for cosmetic use only and unlikely to block the relevant light waves.

As I am not bothered by fashion I  use selectspecs. Unless your order includes extras for a single strength glasses you only pay for the frames. UV protection, anti glare and anti scratch coatings are included free. Besides having some of the cheapest frames - from £6 - they also have a shop in the UK and are practicing opticians. As they have an online presence you also have the option of emailing them with enquiries. Whilst I use them and recommenced them to friends and colleagues in this case I would suggest emailing them with your eye issues and just ask what they would recommend. It doesn't commit you to buy from them and at least the advice would be from professionals.

I do spend more to have blue light blocking lenses but again at a much cheaper prices than high street stores. They also have more expensive frames for the more fashion conscious.

For indoors switching from fluorescent lights to LED lights may also help you, they can be found on amazon. It would certainly get rid of the flickering effect.