Evidence that vestibular hypofunction affects reading acuity in children.

Area of Science:

• Pediatric Audiology
• Neuroscience
• Ophthalmology

Background:

• Children with hearing loss often have vestibular issues, leading to gaze instability.
• Reading difficulties are common in this population but not previously linked to gaze instability.
• A modified reading chart (MNREAD) was developed for oral or sign language responses.

Purpose of the Study:

• To assess reading acuity in children with sensorineural hearing loss and vestibular hypofunction.
• To investigate the relationship between gaze stability and reading performance.
• To validate a modified MNREAD chart for this population.

Main Methods:

• Compared reading acuity in typically developing children versus those with sensorineural hearing loss (with/without vestibular hypofunction).
• Examined test-retest reliability and age-related changes in reading acuity scores.
• Assessed the correlation between reading acuity and dynamic visual acuity.

Main Results:

• The modified MNREAD chart demonstrated good reliability (ICC > 0.86).
• Children with vestibular hypofunction had significantly worse reading acuity (p < 0.002).
• Reading acuity correlated with dynamic visual acuity (r=0.55, p<0.001), not static acuity.

Conclusions:

• Gaze instability resulting from vestibular hypofunction negatively impacts reading ability in children.
• This study establishes a link between visual-vestibular function and reading performance.
• Findings underscore the importance of assessing visual-vestibular function in children with reading difficulties.