While a bigger screen is very pleasant, no matter who you are, there are certain adjustments you can make to any Window PC to make the screen more readable in times of "can't quite make this out..."
I have a very large screen, and if I use the native resolution (always suggested for the very best, cleanest display) and the default DPI (Dots Per Inch, the Windows setting for how many dots are used in a particular dimension) then usually I'll just have a whole lot of dots on the screen, that are not any clearer, or larger, than the guy who is using some cheap small screen!
So, what can you do? Simply adjust the screen's DPI adjustment, to make everything larger on the screen. Depending upon which Windows OS you are using, you may have to do a search to find out where that adjustment is. If you tell us the OS you are using, someone here where give you the details to the adjustment.
If you want something really cool, you can use the Magnifier built into the last few versions of Windows. That will give a much expanded view of the area immediately under the cursor. So you get a split screen view of the desktop. One is the actual desktop, no magnification, and then in an area running along the top of the screen. Try this:
Hold down the "Windows" key (the 'flag' key) and then press the U key (U for Utility).
There look for the Magnifier option.
That magnifier can be adjusted for how much magnification you want, like x2, x4.
It actually works pretty good. Since the regular screen is still there, the adjustment coming from the regular view and using the expanded view is more comfortable, they are both there.
I also have a software application running on my Microsoft Wireless Laser Mouse 8000, which is a long term for the expensive Bluetooth mouse from Microsoft. I will bet there are similar applications for other mice, as well. But, what I am getting around to, is that the 5th mouse button (the 2nd button on the right side) calls up (if you have loaded the accompanying MS software driver) a small magnified area of the immediate cursor area. This is also kinda cool, but a little harder to get used to, since you only see the immediate area around the cursor at a magnified scale. That might be more natural for some people, though. You might look into that. You don't have to buy a special mouse (MS or whoever) if you just do a Google search for similar applications. They are probably free.