ABSTRACT

Purpose

This report aims to present a case of dengue-related myopic shift.

Methods

This is a case report of a patient with dengue-related transient myopia, and demonstrates possible underlying pathophysiology.

Results

A 38-year-old gentleman presented with bilateral blurring of vision with an unaided visual acuity (VA) of 6/120 bilaterally. He had a refractive error of −2.50 dioptres in the right eye, and −3.50 dioptres in the left eye. Ultrasound biomicroscopy (UBM) revealed suprachoroidal effusion with anterior displacement of the lens-iris complex bilaterally. Biometry performed showed lens thickness (LT) of 4.47 mm in the right eye, and 4.65 mm in the left eye. His unaided VA was noted to be 6/6 bilaterally 4 days later.

Conclusions

Dengue-related myopic shift was likely secondary to two mechanisms. Firstly, suprachoroidal effusion resulted in an anterior displacement of the lens-iris complex. Secondly, there was an increase in the antero-posterior diameter of the lens, resulting in index myopia.

中文翻译：

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登革热患者的近视转变

摘要

目的

本报告旨在介绍一个与登革热相关的近视转变案例。

方法

这是登革热相关短暂性近视患者的病例报告，并展示了可能的潜在病理生理学。

结果

一名 38 岁的绅士因双侧视力模糊就诊，双侧裸眼视力 (VA) 为 6/120。他的右眼屈光度为 -2.50，左眼屈光度为 -3.50。超声生物显微镜检查 (UBM) 显示脉络膜上腔积液伴双侧晶状体-虹膜复合体前移。进行的生物测量显示右眼晶状体厚度 (LT) 为 4.47 毫米，左眼晶状体厚度 (LT) 为 4.65 毫米。4 天后，他的双侧 VA 为 6/6。

结论

登革热相关的近视转变可能继发于两种机制。首先，脉络膜上腔积液导致晶状体-虹膜复合体向前移位。其次，晶状体前后径增大，导致屈光度近视。