Comparison of the therapeutic effects of defocus incorporated multiple segments with orthokeratology lenses on controlling axial length growth of myopia in adolescents

Abstract:

AIM: To observe and analyze the clinical effect of defocus incorporated multiple segments(DIMS)and orthokeratology lenses on controlling axial length(AL)growth of myopia in adolescents.

METHODS: A retrospective study was conducted on 120 adolescent myopia patients(120 eyes)who visited our hospital from April 2021 to April 2023(using data from the main eye for study). According to the patient's preference, they were divided into DIMS group and orthokeratology group, with 60 cases(60 eyes)in each group. Followed-up for 1 a, the changes in spherical equivalent refraction(SER)and AL before and after wearing lenses were measured.

RESULTS: The general data of adolescents in the two groups were comparable. There were significant differences between two groups in SER before and after wearing glasses(F_time=123.700, P_time<0.001; F_group=7.499, P_group=0.007; F_interaction=3.580, P_interaction=0.029). The difference of AL between the two groups in comparison of time and interaction before and after wearing glasses was statistically significant(F_time=40.100, P_time<0.001; F_interaction=5.830, P_interaction=0.003), there was no statistically significant difference between groups(F_group=0.008, P_group=0.927). After wearing lenses for 6 mo and 1 a, there was a statistical difference between the two groups in the changes of SER and AL(all P<0.01). Among them, the changes in SER and AL in the orthokeratology lenses group were smaller than those in the DIMS group.

CONCLUSION: The orthokeratology lenses have a better effect than the DIMS on controlling the AL growth in myopic adolescents.