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Symptomatic nocturnal lagophthalmos.

C J Lyons1, A A McNab

  • 1Royal Melbourne Hospital, Victoria, Australia.

Australian and New Zealand Journal of Ophthalmology
|November 1, 1990
PubMed
Summary
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Nocturnal lagophthalmos, or inability to close eyes during sleep, affects many patients. Simple treatments resolve symptoms, with surgery rarely needed for this common corneal exposure condition.

Area of Science:

  • Ophthalmology
  • Corneal Disease

Background:

  • Nocturnal lagophthalmos causes corneal exposure symptoms.
  • This condition is not uncommon in the general population.

Purpose of the Study:

  • To investigate the causes and clinical presentation of nocturnal lagophthalmos.
  • To evaluate the effectiveness of conservative treatment modalities.

Main Methods:

  • Retrospective analysis of 40 patients diagnosed with nocturnal lagophthalmos over six months.
  • Identification of potential triggers and associated conditions.
  • Assessment of treatment outcomes.

Main Results:

  • Alcohol intoxication (30%) and hypnotics were common preceding factors.
  • Other causes included blepharoplasty, botulinum toxin, facial palsy, and skin disease.

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  • In 42% of cases, no specific cause was identified, though familial predisposition was noted.
  • Most cases were unilateral, and Bell's phenomenon testing was not predictive.
  • All patients achieved symptom relief with conservative management.

    • Conclusions:

    • Nocturnal lagophthalmos has diverse potential causes, with a significant idiopathic group.
    • Conservative treatments are effective, negating the need for surgery in most cases.
    • Further research into idiopathic nocturnal lagophthalmos and genetic factors may be warranted.