Bilateral congenital macular coloboma: Swept-source optical coherence tomography findings.

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Published Oct 25, 2018
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Vol. 96 No. 8 (2018): Issue Aug 2018

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Imène Zhioua Braham
Majdi Boukari
Imen Ammous
Ilhem Mili Boussen
Khalil Errais
Raja Zhioua

Abstract

A 15-year-old male presented with decreased vision and nystagmus from childhood. Best-corrected visual acuity was limited to 0,05/10 in both eyes. Fundus examination revealed a well-demarcated macular excavation of 2 discs diameter, baring of the underlying sclera, surrounded by a pigmented rim and hypopigmented retinal areas. Autofluorescence images showed a central hypoautofluorescent lesion with patchy hypoautofluorescent areas corresponding to retinal pigmented epithelium (RPE) and photoreceptor atrophy. Swept-source optical coherence tomography showed a crater-like depression with atrophy of the neurosensory retina and the absence of RPE and choroid except some large choroidal vessels. Anti-toxoplasma antibody was negative.
These findings are suggestive of a congenital macular coloboma. Similar lesions have to be excluded such as toxoplasmosis macular scar and North Carolina dystrophy.

Keywords:

Macular coloboma, optical coherence tomography, congenital toxoplasmosis.

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