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Table 2 Inclusion criteria

From: Effectiveness of screening preschool children for amblyopia: a systematic review


Children from the general population up to the age of six years


Comparison of screening versus no screening

or Comparison of different screening strategies

Type of study

Randomised controlled trials

Non-randomised intervention studies

Controlled cohort studies

Outcome measurements

Prevalence rate of amblyopia measured by visual acuity

Quality of life (e.g., psychosocial or emotional impairment, labelling, social isolation)

Cognitive and educational development

Adverse effects related to screening