Table 3 Comparison between the Tanjong Pagar Survey (TPS) and the Singapore Chinese Eye Study (SCES) on the prevalence of best-corrected blindness and visual impairment (VI).
From: Trends of Visual Impairment and Blindness in the Singapore Chinese Population over a Decade
Vision Status# | Age group, years | United States Definition† | World Health Organization Definition‡ | ||
|---|---|---|---|---|---|
TPS (N = 1,152) | SCES (N = 3,353) | TPS (n = 1,152) | SCES (n = 3,353) | ||
n, (%) | n, (%) | n, (%) | n, (%) | ||
Bilateral blindness | 40–49 | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
50–59 | 0 (0.0) | 1 (0.1) | 0 (0.0) | 0 (0.0) | |
60–69 | 1 (0.3) | 2 (0.2) | 0 (0.0) | 1 (0.1) | |
70 + | 5 (2.0) | 5 (0.8) | 4 (1.6) | 3 (0.5) | |
Total | 6 (0.5) | 8 (0.2) | 4 (0.3) | 4 (0.1) | |
Age-standardised prevalence, % (95% CI)* | 0.3 (0.1–0.9) | 0.2 (0.1–0.4) | 0.2 (0.1–0.8) | 0.1 (0.0–0.3) | |
Bilateral VI^ | 40–49, n (%) | 1 (0.4) | 3 (0.4) | 1 (0.4) | 1 (0.1) |
50–59, n (%) | 3 (1.1) | 6 (0.5) | 2 (0.7) | 4 (0.4) | |
60–69, n (%) | 20 (6.5) | 29 (3.2) | 8 (2.6) | 9 (1.0) | |
70+, n (%) | 39 (15.2) | 112 (17.7) | 14 (5.5) | 42 (6.7) | |
Total, n (%) | 63 (5.5) | 150 (4.5) | 25 (2.2%) | 56 (1.7) | |
Age-standardised prevalence, % (95% CI)* | 3.8 (2.9–5.0) | 3.4 (2.9–4.0) | 1.6 (1.0–2.5) | 1.3 (0.9–1.9) | |
