Honeywell Aerospace requires that suppliers have inspectors' vision tested annually. The near vision test has been pretty helpful for the company I work for because people's eyesight changes and they don't get regular eye exams, so the testing keeps them on their toes.
One thing not addressed in any standard I've read is the use of inspection lenses and lights. Even a person with poor near vision can move their eyes to a focal length that works for close inspection.
One thing I don't like is Honeywell's recent change from a one-time test to an annual test for color vision. As I understand, poor color vision is an inherited trait, not one that develops over time. Once is enough.