Why I was suggested to use reading glasses?

[Jamarion]

I often have pressure in my head whilst reading, someone suggested me use reading glasses? I don't understand, it is my head hurts not my eyes?

[Shaun]

If you read for a long time and force your eyes to focus on the book , it may cause lack of oxygen to the brain and then you get a headache or feel dizzy . Also your eyes will feel strained and blurry . So it is better to get a pair of reading glasses to help you get the focus, then your eyes will feel relaxed as well as your head . Also taking eye exercise will be good for your eyes .

[Kale]

You know ,here are some nerves connecting your eyes and brain. So your brain hurts when there are some problems in your eyes. So reading glasses is suggest to help you relieve the pain.