Title

CASE REPORT: OCCULT MACULAR DYSTROPHY –MULTIMODAL ANALYSIS

Summary

Objective: To describe a case of occult macular dystrophy. Methods: Case report of a patient with occult macular dystrophy attended in Sadalla Amin Ghanem Eye Hospital – Joinville/SC – Brazil. Complete ophthlamological examination, color fundus photography and with, fundus autofluorescence (Canon CX-1– Tokyo, Japan), optical coherence tomography (OCT) (Cirrus HD-OCT model 5000 - Carl Zeiss Meditec, Dublin, CA), fluorescein angiography (FA) (Canon CX-1– Tokyo, Japan), Visual evoked potential and full-field eletrorretinogram and multifocal eletrorretinogram (Reti-port/scan, Rolando Consult). Results: A female patient with no comorbidities complaining of slow and progressive visual decline in both eyes in the last 17 years. The best-corrected visual acuity (BCVA) was 20/150 at the first presentation on jan/2019. In both eyes on, fundus examination and fluorescein angiography, no abnormalities were found. The OCT showed a subtle disruption in the ellipsoid zone (EZ) on the subfoveal area in both eyes. Visual evoked potential and multifocal eletrorretinogram showed reduction of photoreceptors at the central macular. The diagnosis of occult macular dystrophy was then attained. Conclusion: Occult macular dystrophy is a maculopathy that cause slowly progressive visual decline with no fundus abnormalities and with a difficult diagnosis because of the subtle or absent signs on routine multimodal imaging, making necessary the presumptiom of its existence and electrophysiological study for the definitie diagnosis. Key words: occult macular dystrophy, optical coherence tomography, macular dystrophy with no fundus abnormalities.

Area

CLINICAL CASE

Authors

LUCAS DE ANGELIS RUBIRA, ANA PAULA DA SILVA MAGANHOTO, LUCAS HENRIQUE MACEDO SILVA, SUNG EUN SONG WATANABE, FABIO BOM AGGIO