A case of brain hamartoma in a child leading to compressive optic neuropathy mimicking amblyopia.

Hamartomas are benign neoplastic malformations characterized by disorganized growths of tissue in their native location. They may grow in numerous sites throughout the body. We report the case of a 3-year-old boy with unilateral compressive optic neuropathy caused by a brain hamartoma that mimicked strabismic amblyopia. To our knowledge, this is the first case report in the literature of prechiasmal optic nerve compression from a brain hamartoma without ipsilateral bony defect or encephalocele.