I feel that I have a visual impairment but technically an impairment cannot be fixed with regular glasses or contacts. I can see with contacts. 
I am near sighted so I have to wear glasses to drive.
I understand. I have to wear them or contacts to eat a plate of food in front of me and see across the street, but I can see really close up perfectly. Now people sometimes include those who dont have contacts and glasses or access to them to be visually impaired as well. They are uber expensive!
Yeah my glasses costed me a little over 300 so I feel your pain.
Yes it is crazy how expensive it is just to be able to see when some people can just like..... wake up in the morning and see? Lol. Theres all kinds of varietys like you said near sighted, astigmatism, far sighted, and presbyopia.
What is presbyopia? I have never heard of that?
Presbyopia
Presbyopia is a condition associated with the aging of the eye that results in progressively worsening ability to focus clearly on close objects. Symptoms include difficulty reading small print, having to hold reading material farther away, headaches, and eyestrain. Different people will have different degrees of problems. Other types of refractive errors may exist at the same time as presbyopia.
Presbyopia is a natural part of the aging process. It is due to hardening of the lens of the eye causing the eye to focus light behind rather than
producer with North One Television which made the film on behalf of Channel 4 said; "I have worked in specialist educational environments before, but I had almost no experience of people with a visual impairment or blindness. I wanted to make a documentary with some of the students to explore with them their daily lives. It is interesting to see what is different for them and what is the same; their experiences of daily life can be fundamentally altered by their visual impairment yet that doesn't stop them from having the same hopes