[CoastalCoder]

I appreciate the tip.

I am using single-prescription lenses, and I update them every 1-2 years (via Koch Eye Associates). I order lenses at the specific focal distance of my monitors.

For some reason, in recent years my eyes never feel comfortable with the updated lenses. Not sure if my eyes are getting less forgiving w.r.t. focal distance, or if something is goofy about the lenses that Koch is selling me.

I think my next step is to try another optometrist / glasses-vendor.

Another possibility is that I'm using a big monitor, so the distance from my eyes to the screen-center is pretty different from the distance to the screen-edge. I may just need to try smaller screens or (yuck) curved screens.

[shortcake27]

One possibility to look into is convergence issues. The solution to presbyopia is to prescribe positive lenses. However, positive lenses force your eyes to converge more. So if you have convergence issues, these can make things worse.

This appears to be the issue I have. I’ve been to a few optometrists and they really don’t want to hear about it. To be fair, regular optometrists probably don’t have the margins to deal with problems like this. It really requires a specialist such as an orthoptist.

For now, I just manage best I can. I can only use my reading/computer glasses for a very short period of time before my eyes hurt like crazy. Then I revert to my distance glasses where I can barely read the text, but at least my eyes don’t hurt.

[Stratoscope]

> Another possibility is that I'm using a big monitor, so the distance from my eyes to the screen-center is pretty different from the distance to the screen-edge.

You may be on to something there! About 10 years ago I visited the Google office in Washington, DC to finish up my work on the 2012 general election map. They had a 32" monitor for me to use, and when I put it at the same 20" distance as my laptop screen I had exactly the same problem. The difference in distance from center to edge was too much for me to keep it all in focus.