Figure 1. Screening for Amblyopia Analytic Framework and Key Questions (KQ)

Diagram of the analytic framework and key questions from the original Systematic Evidence Review. Go to Text Description [D] for details.

[D] Select for Text Description.

Key Questions:

  1. What is the prevalence of visual impairment in children younger than age 5 years?
  2. Do reliable, accurate, and feasible screening tests exist that can be used to detect visual disorders in children younger than age 3 years or in children aged 3 to 5 years? These visual disorders include amblyopia, strabismus, refractive errors associated with amblyopia, other rarer conditions associated with amblyopia such as cataracts or ptosis, and refractive error not associated with amblyopia.
  3. Do detection and treatment of conditions associated with amblyopia before amblyopia has developed lead to better treatment outcomes (primary prevention)?
  4. Under what conditions is the treatment of amblyopia successful?
  5. Under what conditions is the treatment of refractive errors not associated with amblyopia successful?
  6. Does improving vision result in improved health outcomes?
  7. What are the adverse effects of screening?
  8. What are the adverse effects of treatment?

Added to 2003 Update:

  1. Does screening for amblyopia and associated conditions in children younger than age 5 years lead to better vision outcomes?

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