Page 137 - DISINVESTMENT AND IMPLEMENTATION OF VISION SCREENING TESTS BASED ON THEIR EFFECTIVENESS
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High rate of failed visual-acuity measurements with the Amsterdam Picture Chart in screening at the age of 36 months
category “doubtful”, or threshold VA and the Dutch guideline category “referred directly” are both designated in this study as insufficient VA.
Figure 1. Amsterdam Picture Chart with eleven different optotypes.
When used at 5 m, the measured visual acuity is 5/30, 5/20, 5/15, 5/10, 5/6 or 5/5.
The height of the optotypes of D = 5 is approximately 10 min of arc when viewed at 5 m.
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