I use these images as examples in my presentations.
Open this link: getting close to legally blind
20/20
20/40
20/70
20/100 definition
There is only 1 letter of difference on the vision chart between 20/100 and 20/200…they are that close in visual acuity
Open this link: legally blind
and you will see
20/20
20/200, which is legally blind
20/400
20/800 acuity
Now, you can get an idea of what a visual impairment actually looks like