I've been lucky to have enjoyed healthy vision throughout my life. That is, until recently. Nothing major, I'll need glasses for some activities. I also learned from the optometrist I should follow the 20-20-20 rule to reduce eye strain. The 20-20-20 rule is simple: Take a break from looking at your computer screen every 20 minutes and look away at something roughly 20 feet away (6 metres) for 20 seconds. While there are no shortages of macOS timer apps available, I figured it'd be fun to bui...
