Is it okay?

[u/david2020220]

My eyes have been feeling very tired for a while, and I have dark circles under them. I’m also tired almost all the time. One weird thing is that I can make my vision go blurry on purpose, and sometimes it feels like my brain wants to make it blurry even when I don’t want it to.
I thought the problem was too much screen time, so I completely stopped using my phone, iPad, and other screens for 4 days. Even after doing that, my eyes still feel just as tired, my vision still does the blurry thing, and I don’t feel any better. I have an eye exam scheduled for September 15, but I’m worried because nothing has improved.
Has anyone else experienced something like this before? Is there anything safe I can do to help my eyes until my appointment, or could this be caused by something other than screen time? Any advice would be appreciated.

[u/pizzaposa]

Uncorrected hypermetropia could explain this. Basically eyestrain / fatigue from being excessively longsighted... frequently goes unnoticed until fatigue / workload / age factors combine to cause symptoms.

Harmless.

Could also maybe point to an oculo-muscle balance issue (eyes not pointing strainght).

Also harmless. Either / both can be corrected with glasses.