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Related Experiment Videos

Eye movement dysfunction vs. language delays in migrant children

S W Hatch1, D Pattison, J E Richman

  • 1New England College of Optometry, Boston, MA 02115.

Journal of the American Optometric Association
|October 1, 1994
PubMed
Summary

Migrant children showed lower automaticity on the Developmental Eye Movement (DEM) test, indicating language barriers, not eye movement coordination issues. Optometrists should consider language when assessing visual-verbal skills in diverse populations.

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Area of Science:

  • Optometry
  • Developmental Optometry
  • Pediatric Optometry

Background:

  • The Developmental Eye Movement (DEM) test assesses visual-verbal saccade skills.
  • It differentiates between verbalization/automaticity and eye movement coordination issues.
  • Previous DEM norms were based on urban/suburban children.

Purpose of the Study:

  • To investigate the impact of language difficulties on DEM performance in migrant children.
  • To determine if migrant children exhibit subnormal DEM automaticity or eye movement dysfunction.

Main Methods:

  • Prospective study of 84 children (ages 7-12) in a Migrant Summer Education Program.
  • The Developmental Eye Movement (DEM) test was administered to assess automaticity and coordination.
  • Results were compared to existing DEM norms.

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Main Results:

  • Migrant children demonstrated significantly lower automaticity compared to DEM norms (p < 0.05).
  • Few significant differences were found in eye movement coordination (p > 0.05).
  • This suggests language barriers, not visual-motor deficits, affect DEM performance.

Conclusions:

  • Language barriers in migrant children impact DEM automaticity, supporting the initial hypothesis.
  • DEM results indicate language difficulties, not necessarily eye movement dysfunction.
  • Optometrists must consider language and cognitive factors in diagnosing eye movement issues in culturally diverse children.