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I agree that the effect is often overhyped. I also thought at first they were a miracle cure, because I spend a lot of time at the computer between clients - looking at nail design examples, chatting with the girls at work. I bought blue light glasses, but honestly, I barely felt a difference. Maybe if you're staring at a screen all day from morning to night without breaks, they help a little, but it's not a cure-all.
Way more effective is the basic 20-20-20 rule: every twenty minutes you look at something twenty centimeters away for twenty seconds. That really helps relieve the strain. I also drink water, try to set my monitor brightness properly and keep a normal distance. And honestly, when I'm cycling or doing something without screens - my eyes rest way better.
If you're gonna buy glasses, don't go for the cheapest options - they won't do anything. But first try just taking more breaks and doing some eye exercises. It's cheaper and actually works.
The effect from them is overstated. I spend a lot of time at the computer myself preparing lessons and bought these glasses - I didn't notice any real difference. What helps much more is just taking breaks, looking off into the distance, and lowering the screen brightness. If your eyes get really tired, it's better to consult an ophthalmologist.
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