PURPOSE: INTRODUCTION TO THE OPHTHALMIC LITERATURE OF AN UNUSUAL CAUSE OF 
PAPILLEDEMA AND SUBSEQUENT OPTIC ATROPHY: X-linked hypophosphatemic rickets 
(XLH).
METHODS: Case report of a 3-year-old female presenting with papilledema 
resulting from craniosynostosis secondary to XLH.
RESULTS: Early intervention with craniofacial surgery prevented the development 
of optic atrophy.
CONCLUSION: Children with XLH should be screened for ophthalmic evidence of 
elevated intracranial pressure to aid early intervention and prevention of 
permanent loss of vision.