No, an older person cannot get autism from a stroke.
Autism isn't a disease so it's not something you can 'get', it's a neurological difference so it's something that you are. Being a neurological difference means it is something you are born as, it's formed when the brain is formed in the womb and a person cannot change from neurotypical to autistic by having a stroke.
Autism refers to a neurology, it's not something that can 'grow' at all. Autistic symptoms can improve, worsen, or change as an Autistic person gets older - it's typically more severe in children, but older people can show worsening symptoms too or can simply stop caring so much about hiding their autism.
An Autistic is a person with Autism.
A person does not 'develop' autism - a person is born autistic.
A person does not 'develop' autism - a person is born autistic.
A person does not develop autism. Autism is a neurological difference, as such it starts within the womb during the second trimester when the brain is being formed.
You are born with autism and have it all your life. However, with skills training and preparation, the effects of autism can be better controlled so that it seems to be less obvious when one is older.
Someone who is born on the autism spectrum/has autism spectrum disorder/is autistic. Often used in an offensive manner towards autistic people.
The eyes of a person with autism look the same as the eyes of other people.
You can't - autism is an absolute, you are either autistic or you are not and there is no way that a person can become 'less autistic'. A person with autism can improve in areas such as commnuication, social skills, and functioning, this tends to happen naturally as autistic people get older and learn new skills, but it is helped by supporting and understanding the autistic person.
A person does not develop autism, autism is not something that occurs to neurotypical people, in the same way that a white person doesn't develop into another race. A person is born autistic, their brains form in the womb.
ischemic stroke
A teenager doesn't develop autism - a person is autistic from birth.