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Development and Validation of a Mobile Application to Detect Visual Dysfunction Following Mild Traumatic Brain

Susan M Linder1,2, Mandy Miller Koop2, Diane Tucker3

  • 1Department of Physical Medicine and Rehabilitation, Cleveland Clinic, Cleveland, OH 44195, USA.

Military Medicine
|January 27, 2021
PubMed
Summary
This summary is machine-generated.

A new mobile app effectively screens for visual dysfunction after mild traumatic brain injury. It accurately measures near point of convergence and reading fluency, aiding in early diagnosis.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Mobile Health Technology

Background:

  • Visual dysfunction is a common yet often undiagnosed consequence of mild traumatic brain injury (mTBI).
  • Early detection of visual impairments is crucial for effective management and recovery following mTBI.

Purpose of the Study:

  • To validate a mobile application designed to assess visual acuity and oculomotor function for detecting visual dysfunction in mTBI patients.
  • To evaluate the utility of a mobile app as a field-deployable screening tool for visual impairments post-mTBI.

Main Methods:

  • A custom iPad application was developed to measure near point of convergence (NPC), distance visual acuity, reading fluency, and convergence insufficiency (CI) symptoms.
  • Construct validity was assessed by comparing iPad measurements with standard clinical methods in 50 healthy young adults.
  • Measurement accuracy for NPC was determined by simultaneous comparison with a ruler.

Main Results:

  • iPad-based NPC measurements showed high correlation with both clinical (0.893) and ruler (0.947) measurements.
  • Distance visual acuity measurements demonstrated modest correlation with standard wall chart assessments.
  • The Convergence Insufficiency Symptom Survey yielded a mean score of 13.0 (7.4), with reading fluency averaging 291 (119) words per minute.

Conclusions:

  • The mobile application demonstrates high accuracy for NPC measurement and potential as a screening tool for visual dysfunction post-mTBI.
  • Combining iPad-based visual assessments with reading fluency and symptom surveys may effectively identify visual impairments in mTBI cases.
  • The developed app offers a valuable, accessible method for field-based screening of visual deficits following mild traumatic brain injury.