Abstract
ABSTRACT We report the case of a 24-year-old previously healthy man who presented with an unusual combination of myelin oligodendrocyte glycoprotein antibody-associated optic neuritis (MOG-ON) and Leber’s hereditary optic neuropathy (LHON). Initially experiencing two episodes of painless visual acuity reduction, the patient responded well to glucocorticoid therapy, coinciding with an MOG antibody titre of 1:32. However, a subsequent third episode of painless vision loss did not improve with continued glucocorticoid treatment. Further diagnostic workup revealed a mitochondrial DNA mutation (11778 G>A), confirming the diagnosis of LHON. This unique presentation highlights the necessity of considering multiple aetiologies in cases of optic neuropathy where the cause is not immediately apparent, especially when the response to standard treatments is inconsistent. Our findings suggest that dual pathologies may coexist and should be considered in unexplained cases of optic neuropathy to facilitate appropriate clinical management.
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