Dysfunction of vestibulo-ocular reflex in infants and toddlers

Area of Science:

• Pediatric Vestibular Audiology
• Neuroscience
• Otolaryngology

Background:

• The vestibulo-ocular reflex (VOR) is crucial for maintaining gaze stability during head movements.
• Vestibular and hearing impairments in young children can significantly impact development and quality of life.
• Understanding VOR function in this population is essential for early diagnosis and intervention.

Purpose of the Study:

• To determine the prevalence of vestibulo-ocular reflex (VOR) functional loss in young children presenting with vestibular/balance concerns and/or hearing loss.
• To evaluate the effectiveness of rotary chair testing in assessing VOR function in this pediatric cohort.
• To identify potential causes and implications of VOR dysfunction in early childhood.

Main Methods:

• Retrospective analysis of 320 children aged 3 years or younger undergoing rotary chair testing.
• Data collection included demographics, medical diagnoses, and vestibular testing results.
• VOR functional status was determined based on rotary chair testing outcomes, utilizing video goggles or observational cameras.

Main Results:

• 49% of the 320 children exhibited abnormal VOR findings.
• Among patients where video goggles were used (n=40), 70% had abnormal VOR.
• With observational cameras (n=280), 46% showed abnormal VOR, indicating its utility in younger children.
• Causes included inner ear malformations, infections, neurological conditions, and genetic factors.

Conclusions:

• Vestibulo-ocular reflex (VOR) dysfunction is prevalent in young children with vestibular/balance and/or hearing loss.
• Rotary chair testing is a valuable tool for identifying VOR pathologies in this age group.
• While video goggles offer optimal recording, observational cameras provide an effective alternative for very young children, aiding in timely clinical management.