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Relationship between eye symptoms and blepharospasm: a multicenter case-control study.

Davide Martino1, Giovanni Defazio, Giovanni Alessio

  • 1Department of Neurological and Psychiatric Sciences, University of Bari, Bari, Italy.

Movement Disorders : Official Journal of the Movement Disorder Society
|August 11, 2005
PubMed
Summary
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Ocular symptoms, particularly dry eye, precede primary blepharospasm (BSP) onset, especially in middle age. These eye conditions may contribute to BSP development.

Area of Science:

  • Ophthalmology
  • Neurology
  • Medical research

Background:

  • Patients with primary blepharospasm (BSP) often report preceding ocular symptoms, but their significance is unclear.
  • The role of anterior segment eye diseases in BSP pathogenesis requires further investigation.

Purpose of the Study:

  • To investigate the association between ocular symptoms and primary blepharospasm (BSP).
  • To determine if early ocular discomfort influences BSP development.

Main Methods:

  • A multicenter case-control study involving 165 BSP patients and 180 controls with hemifacial spasm.
  • Validated questionnaire assessing ocular symptoms, correlated with ophthalmological examinations.
  • Logistic regression analysis to identify symptom associations.

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Main Results:

  • A significant association exists between ocular symptoms at disease onset and BSP.
  • Short-latency ocular symptoms (within one year of onset) showed a stronger link to BSP.
  • The association was more pronounced when symptoms began between ages 40-59.

Conclusions:

  • Eye diseases, such as dry eye syndrome, are linked to BSP and may play a role in its pathogenesis.
  • Age at onset of ocular symptoms appears to interact with eye diseases in BSP development.