Simon Jones: Learning from our mistakes

I had a text message from a friend recently asking what I thought of ‘blue light glasses’. OncI had a text message from a friend recently asking what I thought of ‘blue light glasses’. Once I had established that he wasn’t suffering from any issue that needed the intervention of an optometrist and found out exactly what he meant by ‘blue light glasses’ (cheap frames fitted with coated plano lenses), I gave him my opinion.

I said that while there was no strong evidence to show the levels of blue light emitted from smart devices and the like could do any damage, there was a small chance that there could be of some benefit for improving sleep – I felt I was sleeping slightly better when I first tried the lenses when they first came to market early in the last decade. For what it’s worth, I don’t have a blue light coating on any of my current frames.