Those who are born totally blind, see nothing. Not black...just nothing.
Those who go totally blind later, see black as they are familiar with the color. Most people are not totally blind and see a variety if things. Some people have perfect vision for what they can see but it is very little compared to sighted people. It would be like poking a hole in a piece of paper and walking around like that.
Other people it is blurry. It is like looking through wax paper. They can make out shapes and colors but it is not crisp. Still others can only see thing up close. So everything appears normal to them but they cannot see more than a few inches or a few feet away.
Not enough information is given but my mom is in the medical feild and she says that a condition common with age is presbyopia. It causes the leanses in your eye to become less flexable and less able to thicken therefore less able to focus on near by objects. Another is catteracts which I assume you already know about so I will not explain.
