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[Ocular manifestation in dengue fever]
C Haritoglou1, F Scholz, A Bialasiewicz
1Universitäts-Augenklinik, München.
Unlabelled:
Dengue-Fever is a mosquito transmitted viral disease. It is endemic mainly in South-East Asia and Africa. The clinical manifestation is divided into different stages. Ocular manifestations in travellers have been rarely reported.
Patients:
We present the cases of two patients, having just returned from a trip to Thailand. During their trip they had fallen ill with symptoms of classic dengue-fever.
Findings:
On examination visual acuity had decreased in both patients. In one patient we detected a relative central scotoma in perimetry and reduced amplitudes in VEP. In indirect ophthalmoscopy we found intraretinal haemorrhages, foveal lesions in the pigment epithelium, cotton-wool spots and a maculopathy. The fluorescein angiographic findings included extravasation in the macular region and block fluorescence. The diagnosis was confirmed by a rise in Dengue-fever antibody titre and the detection of flavivirus IgM antibodies.
Conclusion:
Dengue-fever and its ocular manifestation in Europeans is a rare condition. Expanding tourism to tropical countries may lead to an increasing number of cases.