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Summary
The Marcus Gunn phenomenon involves involuntary eyelid elevation linked to jaw movement. This report reviews its mechanisms, differential diagnosis, and a rare associated faciopalpebral synkinesis.
Area of Science:
- Ophthalmology
- Neurology
- Synkinesis
Context:
- The Marcus Gunn phenomenon is a rare neurological condition.
- It involves aberrant connections between cranial nerves controlling jaw and eyelid muscles.
Purpose:
- To report ten cases of the Marcus Gunn phenomenon.
- To review proposed mechanisms and differential diagnoses.
- To present a rare case of faciopalpebral synkinesis.
Summary:
- Ten cases of Marcus Gunn phenomenon, characterized by synkinetic eyelid elevation with jaw movement, are presented.
- The review covers proposed mechanisms and differential diagnosis, including Marin Amat syndrome.
- A rare case of eyelid elevation during smiling is also discussed.
Impact:
- Enhances understanding of Marcus Gunn phenomenon and related synkinetic disorders.
- Provides clinical insights for diagnosis and management.
- Contributes to the literature on rare neurological and ophthalmological conditions.