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Asymmetric eyebrow elevation and its association with ocular dominance
Christopher T Shah1, Elizabeth V Nguyen, Adam S Hassan
1Michigan State University College of Human Medicine, Department of Surgery, Grand Rapids, Michigan, USA.
Ophthalmic Plastic and Reconstructive Surgery
|December 22, 2011
Summary
Involuntary asymmetric eyebrow elevation is significantly linked to ocular dominance. This finding suggests assessing eye dominance is crucial before and after blepharoplasty surgery to prevent complications.
Area of Science:
- Ophthalmology
- Plastic Surgery
- Neurology
Background:
- Asymmetric eyebrow elevation can occur involuntarily in patients.
- Ocular dominance refers to the preferred eye used for visual tasks.
- The relationship between eyebrow movement and eye dominance is not well understood.
Purpose of the Study:
- To investigate the association between involuntary asymmetric eyebrow elevation and ocular dominance.
- To determine if ocular dominance influences the side of eyebrow elevation.
Main Methods:
- Retrospective cohort study of 47 patients undergoing bilateral upper eyelid blepharoplasty.
- Involuntary asymmetric eyebrow elevation assessed via photographic analysis of frontalis muscle recruitment.
- Ocular dominance determined using a modified Porta test; statistical analysis by Fisher Exact test.
Main Results:
- 66% of patients exhibited right eyebrow elevation, 34% left.
- Right eyebrow elevation strongly correlated with right-eye dominance (87%, p < 0.001).
- Left eyebrow elevation correlated with left-eye dominance (62.5%, p < 0.001).
Conclusions:
- A significant association exists between involuntary asymmetric eyebrow elevation and ocular dominance.
- Pre- and postoperative assessment of ocular dominance is recommended for blepharoplasty patients with brow asymmetry.
- Recognizing this link aids in preventing overcorrection and potential complications like lagophthalmos.
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