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. 2021 Jan 1;21:1. doi: 10.1186/s12886-020-01714-4

Table 2.

Prevalence of vision loss

Vision loss
frequency % 95% CI
Total 481 9.2 [7.7–10.9]
Age (years)
 15–44 111 5.1 [3.8–6.8]
 45–54 117 16.9 [12.4–22.5]
 55–64 140 23.4 [17.0–31.3]
≥ 65 113 21.1 [14.8–29.3]
Sex
 Males 160 7.2 [5.6–9.1]
 Females 321 10.8 [8.8–13.2]
Ethnicity
 African 290 9.3 [7.5–11.3]
 White 3 2.2 [0.7–7.0]
 Mixed race 118 8.8 [5.9–12.7]
 Indian/Asian 70 29.5 [21.2–39.3]
Highest Education
 No formal schooling/Gr0–7 240 15.1 [12.1–18.6]
 Grade 8–12 (or equivalent) 215 7.5 [5.9–9.4]
 Higher education 26 6.3 [3.4–11.4]
Employed
 No 377 9.8 [8.0–11.9]
 Yes 104 7.7 [5.5–10.7]
Urban/Rural residence
 Rural 155 8.3 [6.4–10.7]
 Urban 326 9.7 [7.7–12.2]
Province
 Western Cape 87 7.8 [5.2–11.7]
 Eastern Cape 36 6.3 [4.1–9.6]
 Northern Cape 34 5.8 [3.2–10.4]
 Free State 41 9.9 [5.3–17.8]
 KwaZulu Natal 165 17.6 [13.2–23.1]
 North West 26 5.1 [2.8–9.2]
 Gauteng 54 9.2 [5.6–14.7]
 Mpumalanga 9 1.3 [0.5–3.4]
 Limpopo 29 7.3 [4.3–12.0]
Self-reported diagnosis of diabetes
 No previous diabetes diagnosis 386 7.8 [6.5–9.5]
 Previous diabetes diagnosis 95 30.1 [22.4–39.3]
Years since last eye examination
≤ 2 years 158 13.3 [9.7–18.0]
 3–5 years 38 13.2 [8.1–20.9]
 > 5 years 27 8.8 [4.6–16.4]
 Never 258 7.7 [6.2–9.4]
Do you use eyeglasses or contact lenses to see far away†
 Yes 111 14.3 [9.3–21.2]
 No 367 8.4 [7.0–10.1]
Do you use eyeglasses or contact lenses to see up close†
 Yes 126 12.4 [8.2–18.2]
 No 348 8.5 [7.1–10.2]
In the last 30 days, how difficult was it to see & recognize an object or a person you know across the road (from a distance of about 20 m)?†
 None 269 6.3 [5.1–7.7]
 Mild 84 19.1 [13.0–27.0]
 Moderate 63 24.1 [17.7–31.8]
 Severe 49 36.3 [23.0–52.0]
In the last 30 days, how difficult was it to see & recognize an object at arm’s length†
 None 260 6.3 [5.1–7.7]
 Mild 98 18 [13.1–24.2]
 Moderate 62 23.4 [16.9–31.4]
 Severe 46 40 [26.0–55.8]

%, percentage of frequency; CI Confidence Interval