Table 3 Forms of visual impairment categories among people living with T2DM at Dessie town Hospitals, Northeast Ethiopia, 2020, (n = 322)

< 6/12–6/18

Bilateral mild VI

28

23.1

< 6/18–6/60

Bilateral moderate VI

10

8.3

< 6/60–3/60

Bilateral severe VI

1

0.8

< 3/60-NLP

Bilateral blindness

4

3.3

< 6/12–6/18, other eye 6/6–6/12

Monocular mild VI

0

0.0

< 6/18–6/60, other eye 6/6–6/18

Monocular moderate VI

48

39.7

< 6/60–3/60, other eye 6/6–6/60

Monocular severe VI

20

16.5

< 3/60-NLP, other eye 6/6–3/60

Monocular blindness

10

8.3

Total

121

100