Effects of ethylenediaminetetraacetic acid chelation for calcific band keratopathy on corneal topography assessed by fourier harmonic analysis.

IF 2.1 3区医学 Q2 OPHTHALMOLOGY

Japanese Journal of Ophthalmology Pub Date : 2025-01-23 DOI:10.1007/s10384-025-01160-z

Shoko Saito, Yumi Kusumi, Yoji Takano, Masaki Fukui, Masakazu Yamada

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引用次数: 0

Abstract

Purpose: Chemical chelation with ethylenediaminetetraacetic acid (EDTA) is an established treatment for calcific band keratopathy (CBK), whereas removal of calcium deposits from the subepithelial layer of the cornea may cause corneal irregularity. Using Fourier harmonic analysis, we analyzed the corneal topography in eyes with CBK treated by EDTA chelation.

Study design: Retrospective, single-center study.

Methods: This study included 42 eyes of 26 patients who underwent chemical chelation using EDTA for CBK at the Kyorin University Hospital. Clinical data included age, sex, refraction, visual acuity, operation records, and corneal topography. Corneal topography was evaluated by a TMS-5 Corneal Topographer, and 3.0- and 6.0-mm-diameter Fourier series harmonic analyses were performed. Refraction, visual acuity, and parameters of corneal topography were compared before surgery and at 1 and 4 weeks postoperatively.

Results: Visual acuity and refraction (spherical equivalent and astigmatism) did not significantly change at 4 weeks postoperatively. Fourier harmonic analysis revealed that there were no time serial changes in the spherical component and regular astigmatism in both 3.0- and 6.0-mm analyses. Asymmetry astigmatism, and high-order irregularity significantly increased at 1 week postoperatively but decreased at 4 weeks postoperatively, with no statistical differences compared with preoperative data.

Conclusion: The effects of EDTA treatment on the corneal shape and refraction are minimal, which is beneficial for maintaining visual function in patients with CBK.

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来源期刊

Japanese Journal of Ophthalmology 医学-眼科学

CiteScore

4.80

自引率

8.30%

发文量

审稿时长

6-12 weeks

期刊介绍： The Japanese Journal of Ophthalmology (JJO) was inaugurated in 1957 as a quarterly journal published in English by the Ophthalmology Department of the University of Tokyo, with the aim of disseminating the achievements of Japanese ophthalmologists worldwide. JJO remains the only Japanese ophthalmology journal published in English. In 1997, the Japanese Ophthalmological Society assumed the responsibility for publishing the Japanese Journal of Ophthalmology as its official English-language publication. Currently the journal is published bimonthly and accepts papers from authors worldwide. JJO has become an international interdisciplinary forum for the publication of basic science and clinical research papers.