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Published on: March 29, 2022
Myopic Shift in a Patient with Dengue Fever
Helen Mi Fang1,2,3, Oon Tek Ng4, Rupesh Agrawal1,2,3,5,6,7,8
1National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore.
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.
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