I have a  Visual impairment, also known as vision impairment or vision loss,
I wear glasses and have always wondered how vision works
I have heard Some also include those who have a decreased ability to see because they do not have access to glasses. Mine might cause me to go blind
Oh ok I am near sighted and don't even know how it works just know i need my glasses lol
Yeah the term blindness for complete or nearly complete vision loss.