You/she can also measure your preferred working distance from the monitor and have “computer glasses” made for that distance. If the glasses have progressive lenses, the center area will be larger, with the distance and close areas at the top and bottom being smaller.
I gave away my 24 in monitors and now work on an iPad Pro or 13 in MacBook. I use the MacBook on a riser that puts it at eye level.
The larger screens are great if you need several windows open at one time, but at the distance I see best I had to move my head to focus on off center items. These days I prefer to use one app at a time or two tiled side by side which allows me to keep everything in focus.
IMO, the best solution would depend on her eyesight and how she uses her computer.
iMac, I have bifocal contacts and then 2 different sets of additional reading glasses, one for books that are held closer to my eyes and one for computer work. While I like and use my MacBook Air a lot I find I have toreally get at the exact right position to be able to see the screen and it’s much more tiring for a long day of computer work.
After 40 years being heavily shortsighted (-12 diopter correction) and now slightly farsighted (+0.5) after cataracts surgery before my 50s, I am pretty convinced I prefer a computer desktop for regular work and an iPad for mobility.
On the other hand, while I love the iMacs form factor, I would much prefer a Mac Mini with an external display, if desk space is not a constraint. This way you can change computer or monitor in the future.
I wear progressive lenses and found the 27” screen too tall for them. The new 24” iMac is perfect for me, much more screen space than a laptop but not too tall. I also have a 13” MBA for travel. The 13” is just too small for long term use.
i have progressive lens and find them impractical for use with 27” Retina iMac. Neck strain have to look “down”. Much prefer reading glasses set to focus at the distance of screen. while i have a 15in Retina Macbook which great for portable use i much prefer the big screen of the iMac.
Interesting you said that about 24". We’re considering replacing an ancient 27" iMac with a 24" M1 iMac. The former didn’t get much use but with Covid we’re home all the time and this would sit on a high use desk so WOULD get used.
My concern would be how much screen real estate we’d get. I guess the 24" must be higher res than an ancient 27".
Anyone made that switch?
And I agree with “ask her” and the assumptions you make about beingstuck at home now and traveling later. And traveling later could mean a MacBook later or, as some have said, an iPad.