I think many people don't hear this enough. Eye exams can catch things and since a lot of the people I know get a good 4~6 years out of their glasses it makes since to get an exam when replacing them. Sure, exams might cost time/money but most people just don't hear the story of going to get a new pair of glasses and being saved from xyz eye condition story enough. I live outside the USA now and to get contacts you need a recent eye exam to purchase them. I think this works out good because the country I live in has a high number of contact users and I feel it ensures better health for the great amount of those who need vision correction.
Sounds like a great reason to subsidize yearly eye exams for those who can't afford them. Or even to cover the cost of an annual exam for every person, to avoid the usual problems with means testing.
