METHODS: A prospective cohort study was conducted among children with primary simple unilateral congenital ptosis and their parent/guardian who attended three tertiary hospitals from 2022 to 2024. The patients and their parents/guardians answered Spence Children's Anxiety Scale-Social Anxiety and the PedsQL 4.0 Generic Core Scale, at the time of recruitment and 3 months after ptosis surgery.

RESULTS: This study involved 45 children, of which 26 (57.8%) were female. At enrollment, 18 (40.0%) had severe ptosis, and 15 (33.3%) had amblyopia. All surgeries were successful, with a mean margin to reflex distance (MRD) 1 and mean intereye MRD1 difference of 4.07 ± 0.62 and 0.29 ± 0.46 mm, respectively. Significant improvements in both social anxiety and HRQoL of children and parent were observed following surgery (p < 0.001). A decrease in intereye MRD1 difference postoperatively was the only significant factor affecting social anxiety of children with ptosis following surgery (p < 0.001). Together with the presence of amblyopia (p < 0.001), the intereye MRD1 difference was found to have a significant impact on the improvement in HRQoL (p = 0.021). Age, sex, and education level of parent/guardians were found to significantly affect the change in social anxiety following ptosis surgery (p < 0.05), while the factor most associated with improvement of parental HRQoL was an improvement in the MRD1 of the ptotic eye (p < 0.001).