My neighbor, at the age of 79 had two strokes. The first one he did not even notice except that he had trouble seeing the next day and was very tired. A few days later he had his second stroke, it has left him with little vision in one eye and he becomes tired quicker. Over the last few months he has regained some of the vision in his eye, but he will never fully regain it. He is learning to live with the loss of vision in one eye. (I have live with this all my life as I have a lazy eye, I have been able to give him some tips that I have learned over the years)
My grandmother suffered with TIA - Transient Ischemic Attacks, which are sometimes called mini strokes, but are not really strokes, you will have to look them up. It is when a blood vessel burst in the brain and eventually leads to dementia, and some other problems depending on how many of these occur.
I have known some stroke victims that were fairly young, 30s-40s, and the extent of the stroke was extensive, they did walk again, with a strong limp, never regain full use of one side and never regain full speech back.
My mom's cousin's wife, in her 80's recently had a stroke, and the doctors were telling her to slow down. She had some minor problems to one side of her body, but with therapy, they were gradually going away. There were speech problems, but very minor.
I think the results of the stroke are generally determined fairly rapidly now, and physically therapy is started as soon as possible.
There is a television sports caster in my parents home town (one of those in their 30's) that had a stroke, and he was off work for a year. He returned to work and you can tell from his speech pattern that something definitely happened. He does not move his hands like he used to and you no longer see him walk on television. I gather his was a very bad stroke.
A neurologist will have the best information, but also be one of the hardest doctors to contact. Getting an appointment with one for the first time can be a challenge.