The definition of Visually impaired
World Health Organization
Globally, at least 2.2 billion people have a near or distance vision impairment. In at least 1 billion – or almost half – of these cases, vision impairment could have been prevented or has yet to be addressed.
The leading causes of vision impairment and blindness are uncorrected refractive errors and cataracts.
The majority of people with vision impairment and blindness are over the age of 50 years; however, vision loss can affect people of all ages.
Vision impairment poses an enormous global financial burden with the annual global costs of productivity losses associated with vision impairment from uncorrected myopia and presbyopia alone estimated to be US$ 244 billion and US$ 25.4 billion.
Where have all the visually impaired Chinese go?
Yaoqi Si
Have you seen blind people in your life?
It is not an exaggeration to say that the editor has almost never seen a blind person.
There are no blind people on the road, subway, shopping malls or restaurants.
In China, blind people seem to have disappeared.
Maybe you think that there are too few blind people in China.
Then you are wrong!
least let them listen to this wonderful world.