Rhabdomyosarcoma commonly involves the orbit resulting in unilateral proptosis, swelling, and restricted ocular motility. We saw two unusual cases of children with nasopharyngeal rhabdo-myosarcoma which caused rapid bilateral visual loss due to simultaneous spread of the tumor to the orbital apices. Initial CT scans revealed the tumor, but were misinterpreted as “normal,” causing a significant delay in diagnosis. We recommend high resolution CT scans of the nasopharynx, orbits, and suprasellar region in any child with rapid bilateral visual loss to rule out this common childhood tumor. © Williams and Wilkins 1984. All Rights Reserved.