The noun "vision" can be both countable and uncountable.
Meaning: the sense of sight, or the ability to see
Example sentence: Grandma's vision is still perfect, but her hearing is getting weaker.
Meaning: an idea of what the future could be like
Example sentence: To succeed, a company needs people who share a vision of its future direction.
Note: In religion, a "vision" can be a mental image of a god or other supernatural being. This meaning is countable.
Test your understanding:
- An accident at work has affected my vision, but my boss won't pay for treatment.
- Karl Marx had a vision of a society in which workers aren't exploited by their bosses.