Association between amblyopia and benign paroxysmal positional vertigo: nationwide cohort study

Area of Science:

• Neuroscience
• Ophthalmology
• Otolaryngology

Background:

• Amblyopia, a developmental disorder impacting vision, can affect cognitive and motor functions.
• Benign paroxysmal positional vertigo (BPPV) is a common vestibular disorder.

Purpose of the Study:

• To investigate the association between amblyopia and the risk of developing BPPV.
• To evaluate long-term BPPV risk in amblyopic patients.

Main Methods:

• A 9-year follow-up study using South Korean National Health Insurance Service-National Sample Cohort data.
• Propensity score matching was used to create comparable amblyopia (n=2,660) and non-amblyopia (n=2,660) groups.
• The primary outcome was a diagnosis of BPPV.

Main Results:

• Amblyopia was significantly associated with an increased risk of BPPV (Hazard Ratio [HR] 2.25).
• The risk of BPPV increased with age in patients with amblyopia.
• The association was less pronounced in men.

Conclusions:

• Amblyopia is linked to a substantially higher risk of developing BPPV, suggesting a potential visual-vestibular connection.
• These findings indicate that sensory disorders like amblyopia may have wider neurological implications.
• Further prospective studies are needed to validate these population-level findings on visual-vestibular associations.