Table 7

Diagnostic capabilities of different combinations of screening tools for detecting any vision problem (95% CIs are shown in parentheses)

Combinations of screening toolsSensitivitySpecificityPPVNPV
2 tools
 Acuity and Plusoptix0.76 (0.70 to 0.82)0.68 (0.64 to 0.72)0.46 (0.41 to 0.52)0.89 (0.85 to 0.92)
 Acuity and Spot0.73 (0.67 to 0.79)0.71 (0.67 to 0.74)0.48 (0.41 to 0.53)0.88 (0.85 to 0.91)
 Acuity and Randot0.67 (0.60 to 0.72)0.69 (0.64 to 0.72)0.43 (0.37 to 0.49)0.85 (0.81 to 0.88)
 Acuity and PVS0.70 (0.63 to 0.77)0.56 (0.52 to 0.61)0.37 (0.32 to 0.42)0.84 (0.80 to 0.88)
 Plusoptix and PVS0.73 (0.67 to 0.80)0.67 (0.63 to 0.71)0.45 (0.39 to 0.51)0.88 (0.84 to 0.91)
 Plusoptix and Randot0.72 (0.65 to 0.78)0.80 (0.77 to 0.84)0.57 (0.50 to 0.63)0.89 (0.85 to 0.92)
 Plusoptix and Spot0.68 (0.61 to 0.74)0.85 (0.82 to 0.88)0.63 (0.56 to 0.69)0.88 (0.85 to 0.91)
 Spot and Randot0.68 (0.61 to 0.74)0.85 (0.82 to 0.88)0.63 (0.55 to 0.69)0.88 (0.85 to 0.91)
 Spot and PVS0.69 (0.63 to 0.76)0.71 (0.67 to 0.75)0.47 (0.40 to 0.52)0.87 (0.83 to 0.90)
 Randot and PVS0.56 (0.49 to 0.63)0.69 (0.65 to 0.73)0.40 (0.34 to 0.46)0.81 (0.78 to 0.85)
3 tools
 Acuity and Plusoptix and Spot0.78 (0.71 to 0.83)0.67 (0.63 to 0.71)0.46 (0.41 to 0.51)0.89 (0.86 to 0.92)
 Acuity and Plusoptix and Randot0.81 (0.75 to 0.86)0.64 (0.60 to 0.68)0.45 (0.39 to 0.50)0.90 (0.87 to 0.93)
 Acuity and Plusoptix and PVS0.81 (0.75 to 0.87)0.53 (0.48 to 0.57)0.38 (0.34 to 0.43)0.88 (0.84 to 0.92)
 Acuity and Spot and Randot0.77 (0.70 to 0.83)0.66 (0.62 to 0.70)0.45 (0.40 to 0.51)0.89 (0.86 to 0.92)
 Acuity and Spot and PVS0.79 (0.73 to 0.84)0.55 (0.50 to 0.59)0.39 (0.34 to 0.43)0.88 (0.84 to 0.91)
 Acuity and Randot and PVS0.74 (0.68 to 0.80)0.53 (0.48 to 0.57)0.36 (0.31 to 0.41)0.85 (0.81 to 0.89)
 Plusoptix and Spot and Randot0.75 (0.67 to 0.80)0.79 (0.75 to 0.82)0.55 (0.49 to 0.62)0.90 (0.86 to 0.92)
 Plusoptix and Spot and PVS0.76 (0.68 to 0.81)0.65 (0.61 to 0.69)0.44 (0.39 to 0.50)0.88 (0.84 to 0.91)
 Plusoptix and Randot and PVS0.79 (0.72 to 0.84)0.61 (0.57 to 0.65)0.42 (0.36 to 0.47)0.89 (0.85 to 0.92)
 Spot and Randot and PVS0.75 (0.68 to 0.81)0.65 (0.61 to 0.69)0.44 (0.38 to 0.50)0.88 (0.84 to 0.91)
4 tools
 Acuity and Plusoptix and Randot and PVS0.83 (0.78 to 0.88)0.49 (0.45 to 0.53)0.37 (0.33 to 0.42)0.89 (0.85 to 0.92)
 Acuity and Plusoptix and Spot and Randot0.81 (0.74 to 0.86)0.64 (0.59 to 0.67)0.45 (0.39 to 0.50)0.91 (0.87 to 0.93)
 Acuity and Plusoptix and Spot and PVS0.82 (0.76 to 0.87)0.52 (0.48 to 0.57)0.38 (0.34 to 0.43)0.89 (0.85 to 0.92)
 Acuity and Spot and Randot and PVS0.82 (0.75 to 0.87)0.51 (0.47 to 0.55)0.37 (0.33 to 0.43)0.88 (0.84 to 0.91)
 Plusoptix and Spot and Randot and PVS0.80 (0.74 to 0.85)0.60 (0.56 to 0.64)0.42 (0.36 to 0.46)0.89 (0.86 to 0.92)
  • PVS, pediatric vision scanner.