And the investment of an hour or more a day isn't worth it compared to glasses or contacts, especially when results may vary. I spend at most a few hours each _

And the investment of an hour or more a day isn't worth it compared to glasses or contacts, especially when results may vary. I spend at most a few hours each _year_ at the optometrist, covered by insurance, and then I can instead spend that hour each day on hobbies, cooking, reading, exercising, etc.