Not very easily, there isn't, VIIC1941. I cannot remember the user name, nor the thread, but someone mentions using an "auto-scaler"
Lossless Scaling from the Steam site ($5US) and then runs the game on his 4k monitor at 2560x2048 resolution, and lets the scaler app bring it up to fill the monitor size, so he gets the best of both worlds. I don't know if that would help you, but it would make the text larger. I have a tough time with the game at 1280x1024, much less 1920x1080...
- old eyes fading