Incidence Rate and Risk Factors of Recurrent Pterygium after Pterygium Excision in Buri Ram Hospital
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Abstract
Background: Pterygium is a common ocular problem in Thailand, particularly in rural areas. Outcomes after surgical removal are variable depending on population and surgical technique.
Objective: To evaluate the incidence rate of recurrent pterygium after pterygium excision in Buri Ram Hospital and the associated factors.
Methods: A prospective cohort study was conducted between November 2022 and July 2023. Age, gender, type of pterygium (primary or secondary), size of pterygium, surgeon, surgical technique, complications and follow up period were analyzed by descriptive statistics and Chi-squared test to find the correlation between factors and recurrence of pterygium.
Results: Eighty-seven eyes (87 patients) were studied. Mean age was 62.7±10.1 years. Eighty-four eyes (96.6%) were primary pterygium. Three surgical techniques were performed, consisting of bare sclera technique 41 eyes (47.1%), pterygium excision with amniotic membrane graft 29 eyes (33.3%), pterygium excision with conjunctival autograft 17 eyes (19.5%). Only one eye (1.1%) received intraoperative adjuvant treatment. Recurrence of pterygium was the most common complication (33 eyes, 37.9%). Mean onset of recurrence was 13.6±8.8 weeks. Other complications included increasing intraocular pressure (6 eyes, 6.8%), conjunctival granuloma (2 eyes, 2.3%) and corneal dellen (2 eyes, 2.3%). This study did not detect the correlation between factors and recurrence of pterygium, however, age (p < 0.001), gender (p = 0.026) and type of pterygium (p = 0.045) were associated with surgical technique selection significantly.
Conclusion: Recurrent rate of pterygium after excision in Buriram Hospital was 37.9% which was slightly more than other studies. We did not detect the correlation between factors and recurrence of pterygium but age, gender and type of pterygium appeared to be influencing factors for surgical technique selection.
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