June 2013
Volume 54, Issue 15
Free
ARVO Annual Meeting Abstract  |   June 2013
Effect of oculomotor rehabilitation on basic versional eye movements and reading in mild traumatic brain injury (mTBI)
Author Affiliations & Notes
  • Preethi Thiagarajan
    Biological and Vision Sciences, State University of New York, State College of Optometry, New York, NY
  • Kenneth Ciuffreda
    Biological and Vision Sciences, State University of New York, State College of Optometry, New York, NY
  • Diana Ludlam
    Biological and Vision Sciences, State University of New York, State College of Optometry, New York, NY
  • Neera Kapoor
    Biological and Vision Sciences, State University of New York, State College of Optometry, New York, NY
  • Jose Capo-Aponte
    Optometry, Womack Army Medical Center, Fort Bragg, NC
  • Footnotes
    Commercial Relationships Preethi Thiagarajan, None; Kenneth Ciuffreda, None; Diana Ludlam, None; Neera Kapoor, None; Jose Capo-Aponte, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2013, Vol.54, 1920. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to Subscribers Only
      Sign In or Create an Account ×
    • Get Citation

      Preethi Thiagarajan, Kenneth Ciuffreda, Diana Ludlam, Neera Kapoor, Jose Capo-Aponte; Effect of oculomotor rehabilitation on basic versional eye movements and reading in mild traumatic brain injury (mTBI). Invest. Ophthalmol. Vis. Sci. 2013;54(15):1920.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose: To evaluate a range of objective measures of basic versional and related reading eye movements before and after conventional oculomotor rehabilitation in individuals with mTBI and oculomotor-based, reading-related vision symptoms. The results were also compared with SHAM training.

Methods: All laboratory-based basic two-dimensional, versional eye movements (binocular fixation, saccades, simulated reading) were recorded objectively using the Arrington ViewPoint Binocular EyeTracker. The clinically-based, horizontal reading eye movements were recorded objectively using the Visagraph system. All measures were performed in 12 non-strabismic individuals with mTBI (mean age: 29 [± 3] years), who had oculomotor-based reading-related symptoms, before and after oculomotor (fixation, predictable saccades, and simulated reading eye movements) and SHAM training (6 weeks each, 2 sessions/week, 45 minutes/session). In addition, near vision symptoms using the convergence insufficiency symptom survey (CISS) scale and subjective visual attention using the visual search and attention test (VSAT) were assessed.

Results: Following the oculomotor training, fixational errors both along the horizontal (p<0.05) and vertical (p = 0.06) directions reduced by ~35%. Similarly, horizontal and vertical saccadic gain increased significantly (p<0.05) by 10-15%. The number of extraneous saccades executed during simulated reading reduced significantly (p<0.05) by 20%. However, saccadic latency and peak velocity were normal both at baseline and following training. With respect to the Visagraph findings, reading rate improved by 25% (from 142 to 177 words/min), and the number of fixations reduced by 20% (164 to 135), both of which were significant (p<0.05). In addition, the increased reading rate correlated with reduction in nearvision symptoms (r = -0.4, p<0.05) and increased subjective attention (r = 0.35, p<0.05). However, SHAM training did not have an effect on any of the parameters tested.

Conclusions: The versional-based, oculomotor training had a significant positive effect on both basic versional tracking and related reading ability. Such an overall improvement is suggestive of improved rhythmicity, accuracy, and sequencing of saccades following oculomotor-based vision rehabilitation in mTBI as a result of oculomotor learning. In addition, it suggests oculomotor visual system plasticity.

Keywords: 522 eye movements • 672 reading • 650 plasticity  
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×