Dr.KANIKA AGGARWAL
Aim: To highlight the role of OCTA in delineating the level of pathological microvascular alterations in acute macular neuroretinopathy (AMN) associated with dengue maculopathy. Methods: Multimodal imaging including OCTA, fluorescein angiography (FA) and autofluorescence (FAF) of a 39-year-old female diagnosed with dengue fever. Results: The best-corrected visual acuity was 20/200 and 20/80 in the right (OD) and left (OS) eyes, respectively. Fundus examination showed grayish white lesions with a granular appearance in the parafoveal region in OD and hard exudates in OS. FA only showed late subtle hyperfluorescence in both eyes with few microaneurysms in OS. OCT scans showed hyper-reflectivity in various retinal layers suggestive of AMN. OCTA of OD showed disruption of retinal capillary plexuses and flow deficit in the fovea with hairpin loop configuration of the adjacent retinal capillaries. Conclusions: OCTA provides newer insights into the pathogenesis of AMN lesions in dengue fever.
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