These will help your eyes.
A good color scheme is the most important thing to use - it will help you quickly identify stuff such as functions, methods, keywords, etc.
- Solarized - a nice blue theme, personally way too much blue for my taste, but very clear contrast.
- Gruvbox - what I personally use, on medium contrast, dark theme. No documentation, so implementations in different editors vary.
- Nord - A low contrast, pastel theme. It’s got great documentation, but too low contrast for me.