Bangerter filter’s role in regulating ocular axial length: a novel application of an established therapy

作者：Jingjing Jiang, Tong Zhao, Yue Yin, Mengyu Han, Xi Wu, Yi Chen · 发表于：European journal of medical research · 年份：2025 · DOI：10.1186/s40001-025-02901-z · 被引用次数：4 · 研究领域：Ophthalmology and Visual Impairment Studies、Visual perception and processing mechanisms、Ophthalmology and Eye Disorders

KEY MESSAGES: What is known Occlusion with Bangerter filters designed with different translucent microscopic diffusers is an effective treatment for anisometropic amblyopia. What is new Bangerter filters were found to show an effect on slowing down ocular axial length (AL) growth. When rapid hyperopic reduction occurs in the non-amblyopic eye combined with persistently widening interocular AL differences, Bangerter filter application represents a more preferable alternative to patching for managing anisometropic amblyopia. PURPOSE: Bangerter filter occlusion is an effective clinical method for amblyopia treatment. This study aimed to compare the nonamblyopic eyes elongation and refraction change of patching and Bangerter filter occlusion in treating patients with anisometropic amblyopia and to further investigate the effect of Bangerter filter on axial length growth. METHODS: This retrospective study included 54 patients with anisometropic amblyopia categorized by initial treatment: patching group (n = 24) and Bangerter filter group (n = 30). Consecutive records of both the amblyopia and nonamblyopia eyes were reviewed from baseline before treatment onset to follow-up visits during or post-treatment, including best corrected visual acuity, pneumatic intraocular pressure, spherical equivalent refraction (SER), axial length (AL), corneal curvature, binocular visual function, and accommodative function. In addition, macrostructures of three different densities of Bangerter filte...