Went to one yesterday. Not on NHS now. Mainly used for rehab after brain injury. Dyslexia and learning g difficulties.
I had an assessment. Trial and error really as no diagnosis about continuing difficulty in not being able to tolerate artificial light. (Winter approaching ) watch tv or read anything bigger thsn small screen like this phone
I must've looked very bizarre as had big hat on and dark glasses because of shop lights. They used coloured overlays. Man was extremely patient blocking g computer screen with his body ect.
With the orange one (not my favourite colour lol) the font was clearer and I could read quicker and my head didn't react with sizzling as usual. ?? Trialling over paper before going to the cost of having prescription glasses made with a tint So fingers crossed may help.