INFORMATION ON VISUAL IMPAIRMENT ACROSS COUNTRIES
Cunhat Hiago · 2020
There are four categories of visual impairments: i.e. normal vision, moderate visual impairment, severe visual impairment and blindness. In moderate or severe visual impairment, we speak of low vision. When the person is totally or almost blinded, we speak of blindness. The term visual impairment includes both low vision and blindness.