Population trends in adult strabismus surgery.

To review the trends in adult strabismus procedures in Ontario from 2000-2013. Population-based, retrospective data analysis. All patients 18 years or older who underwent a strabismus related procedure in Ontario and all ophthalmologists who performed these procedures from 2000-2013. Ontario Health Insurance Plan billing claims for strabismus procedures were collected and subdivided by number of muscles repaired, the use of adjustable sutures, repeat procedures, and pharmacological injection of the extraocular muscles adjusted by the total adult population. The number of ophthalmologists performing adult strabismus surgery was also analyzed, subdivided by high-volume and low-volume surgeons. From 2000-2013, per 100 000 adult population, the number of total strabismus surgeries in Ontario increased 26.0%; single-muscle surgery increased 24.2%, 2-muscle surgery increased 43.1%, and 3 or more muscle surgery increased 3.8%. During the study period, strabismus procedures using adjustable sutures increased 30.3%, and repeat procedures increased 19.1%. The number of surgeons performing adult strabismus surgery decreased 30.0% from 2000-2013. In 2013, 92.6% of surgeries were performed by 35.7% of surgeons who performed adult strabismus surgery. From 2000-2013, more strabismus surgery was performed in adults by fewer surgeons, including procedures using adjustable sutures and repeat procedures. These increases may be due to increases in health care funding and a heightened awareness of the functional and psychosocial benefits of strabismus surgery.

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