Page 110 - DISINVESTMENT AND IMPLEMENTATION OF VISION SCREENING TESTS BASED ON THEIR EFFECTIVENESS

CHAPTER 6
repeated within 3 months according to the national protocol, or the child had to be referred to an orthoptist, general practitioner (GP) or ophthalmologist. At 36 months, the VA measurement should be repeated with a VA of 5/10 for both eyes or with a VA above 5/10 with one-line difference between the eyes. In case of VA below 5/10 or a two-line difference, the child should be referred directly. At 45 months, the VA measurement should be repeated when at the first measurement the VA was above 0.5 decimal but with a one-line difference between the eyes. In case of VA below 0.5 for either eye or a two-line difference, the child should be referred directly. If the result of the second VA measurement also proved insufficient, or failed, the child must be referred.
Table 2. Criteria for referral or repeat measurement, according to the Dutch National protocol for vision screening, for sufficient, insufficient or failed measurement at age 36 and 45 months with the Amsterdam Picture Chart* and Landolt-C (Coenen – van Vroonhoven et al. 2010, Telleman et al. 2019).
VA measurement sufficient
VA measurement insufficient
VA measurement failed
36 months
Amsterdam picture chart
Monocular VA ≥ 5/6 for both eyes
Monocular VA < 5/6 for one or both eyes
One line interocular difference*
45 months
Amsterdam picture chart
Monocular VA ≥ 5/5 for both eyes
Monocular VA < 5/5 for one or both eyes
One line interocular difference*
with Landolt-C
Monocular VA ≥ 0.5 for both eyes
Monocular VA <0.5 for one or both eyes
Two lines interocular difference
The measurement failed
Only binocular VA obtained
VA was measured of one eye only
*(not logMAR, however: 5/5, 5/6, 5/10, 5/15, etc.)
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