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Developmental Eye Movement Test: reliability and symptomatology.

J T Tassinari¹, Paul DeLand

¹jtod@sbcglobal.net

Optometry (St. Louis, Mo.)

|July 26, 2005

Summary

The Developmental Eye Movement Test (DEM) shows reliable results for diagnosing oculomotor dysfunction (OMD) in vision therapy patients. Poor DEM performance correlates with OMD symptoms, confirming its clinical utility.

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The presumed influence of attention on accuracy in the Developmental Eye Movement (DEM) Test.

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Area of Science:

Ophthalmology
Optometry
Vision Science

Background:

The Developmental Eye Movement Test (DEM) is a key tool for assessing visual skills and diagnosing oculomotor dysfunction (OMD).
Its reliability and correlation with symptoms are crucial for effective vision therapy evaluations.

Purpose of the Study:

To assess the test-retest reliability of the DEM in different populations.
To investigate the relationship between DEM performance and symptoms of OMD.

Main Methods:

Investigated DEM test-retest reliability in 53 office patients and 13 school subjects over 1-4 weeks.
Administered a questionnaire on OMD symptoms and analyzed its correlation with DEM test results.

Main Results:

The DEM demonstrated significant test-retest correlation for all scores in both groups.
Office patients showed higher reliability; symptomatic subjects performed worse on the DEM.
Failing the DEM Ratio accurately identified 90% of symptomatic subjects.

Conclusions:

The DEM exhibits strong intra-subject reliability and consistent pass-fail classification in an office setting for vision therapy patients.
DEM performance is linked to OMD symptoms, reinforcing its diagnostic value.

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