Screening of Primary School Children for Amblyopia and Amblyogenic Factors in Central Cairo, Egypt

Table 4

Sensitivity and specificity of VA in the detection of amblyopia (weaker eye inclusion) among all subjects and amblyopic suspected subjects.

Log MAR	Sensitivity	Specificity	PPV	NPV
All subjects
0.238	100%	89%	15.2%	100%
0.389	100%	90%	16.7%	100%
0.539	100%	96%	33.3%	100%
0.690	85%	99%	50%	99.7%
Amblyopia-suspected cases
0.238	100%	5%	15.6%	100%
0.389	100%	12.5%	16.7%	100%
0.539	100%	65%	33.3%	100%
0.690	85%	85%	50%	97.1%

: number.