My eyes become dry and I have a headache every day because of computer work. I bought these glasses and gave it a try. First of all, I have to say that I feel a big difference. After using these blue light-blocking eyes for a while, I found that my eyes are no longer dry by looking at the computer. My headache has also eased. These are very clear vision glasses. Last time I was in a hurry, so I packed them in school bags without protective sleeves, but they still did not scratch, so I want to say that they are also very durable. I would recommend these.