Poster 94

by in  Poster Session 2


Gender and Strabismus Surgery

Maureen E. Lloyd; Kammi Gunton    
Wills Eye Hospital
Philadelphia, PA


Introduction: Men and women have been shown to receive significantly different care for an increasing number of medical conditions[1-2]. Incidence data suggest an equal sex distribution for most types of horizontal strabismus[3]. This study tested the hypothesis that female patients represent a statistically significant majority of strabismus surgeries.

Methods: Subjects were identified by searching the electronic health record of the Wills Eye
Hospital Ambulatory Surgical Center from the time of its initiation. We included all patients who had procedures with the following CPT codes: 67311 (strabismus surgery, 1 horizontal muscle) and 67312 (strabismus surgery, 2 horizontal muscles). Patients with history of prior strabismus surgery, other significant ocular pathology, or neurologic disorders were excluded.

Results: Of the 1,262 patients included, 677 (53.6%) were female and 585 (46.4%) were male, a difference of 7.2% (p=0.01).

Conclusion: This study showed a statistically significant difference in the percentages of male and female strabismus surgery patients. Understanding the relationship between gender and the surgical management of strabismus may help to improve our awareness of hidden biases.


  1. Vaccarino, Viola, et al. “Sex and racial differences in the management of acute myocardial infarction, 1994 through 2002.” New England Journal of Medicine 353.7 (2005): 671-682.
  2. Pietropaoli, Anthony P., et al. “Gender differences in mortality in patients with severe sepsis or septic shock.” Gender medicine 7.5 (2010): 422-437.
  3. Greenberg, Amy E., et al. “Incidence and types of childhood esotropia: a population-based study.” Ophthalmology 114.1 (2007): 170-174.
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