This has been something that has been happening for about six months now. Sometimes when I'm reading, it's like I can't concentrate. This mainly only happens when I'm reading on my computer where it's normally bright, and when I'm reading in a really lit room. The closest thing I found to this on the internet was something called "Irlen Syndrome", and the symptoms of it is basically what I'm experiencing. Reading black text on a bright white background is hard for me, and is worse with larger bodies of text. However, according to what I read, Irlen Syndrome is a brain problem and not an eyesight problem.
I've also been more sensitive light when outside, and noticed a lot more floaters when reading in these conditions or outside. I've talked to my eye doctor. She updated my glasses prescription but it's still the same case. She did a few tests regarding eye muscle and said my prescription should not be the cause of it.
I'm not too sure if it has to do with my eyes being sensitive to light or something with my brain. Any ideas or thoughts would be nice.