A retrospective survey of strabismus surgery in a tertiary eye center in northern China, 2014–2019

Abstract Background To evaluate the distribution pattern and changes of strabismus surgery in northern China. Methods The records patients at Qingdao Eye Hospital from January 2014 to December 2019 were reviewed retrospectively. characteristics analyzed included gender, regional distribution, constituent ratio age type strabismus. Changes during periods 2014–2016 2017–2019 compared analyzed. Results A total 5746 recruited. number was relatively stable each year 2016 but gradually increased 2017 2019. Of these, 51.7% (2968/5746) male, 48.3% (2778/5746) female. majority (89.8%, 5159/5746) Shandong Province. statistical results showed that 32.4% (1860/5746) 7–12 years old (primary school level). Patients under 12 (preschool primary level) accounted for 60.0% (3447/5746) all patients. In terms types strabismus, exotropia 63.5% (3650/5746), followed by esotropia vertical rotational 13.2% (758/5746) 9.7% (555/5746), respectively. Intermittent most common among patients, accounting 71.3% (2604/3650). Among with intermittent exotropia, 62.5% (1627/2604) children aged 4–12 years, basic main type. Four percent (231/5746) which adult comprised population, required reoperation. Conclusions level largest group north Exotropia exotropia. rate 5:1.