Risk Factors for Recurrence of Primary Pterygium after Conjunctival Autograft in Ophthalmology Training Program
Keywords:
pterygium, recurrence, trainee, operation time, relative riskAbstract
Objectives: The purpose of this study was to determine the risk factors related to recurrence of pterygium after
surgical excision with conjunctival autograft for primary pterygium performed by ophthalmology trainees.
Methods: Fifty-eight eyes of 58 patients with primary pterygium were consecutively included in the prospective
observational study. The pterygia were preoperatively graded based on corneal involvement and translucency. Recurrence
rates and associated risk factors were evaluated at 1, 3, 6, 9 and 12 months postoperatively.
Results: Recurrences occurred in 8 out of 58 eyes (13.79%) and most cases were detected within 6 months.
The mean recurrence onset was 5 ± 4.2 weeks postoperatively. Operation time ranged from 30 to 120 minutes and the
average was 65.43 ± 21.01 minutes. Mean duration of postoperative topical corticosteroid was 6.48 ± 2.27 weeks.
The recurrence was not statistically significantly associated with age (P = 0.669), gender (P = 0.418), occupation
(P = 0.706), address (P = 0.462), pterygium translucency (P = 0.637), corneal involvement (P = 0.334), academic year
of ophthalmology trainees (P > 0.999) , duration of postoperative topical corticosteroid (P = 0.535) and operation time
(P = 0.139). Prolonged operation time, however, showed the highest relative risk (4.28).
Conclusions: The authors could not find significant risk factors associated with the recurrence of pterygium in
the training program. Prolonged operation time was more likely to relate with the recurrence of pterygium.
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