Abstract
Assessment of combined impact of intracranial hypertension (ICH) and obstructive sleep apnea (OSA) on optic nerve function in children with craniosynostosis (CS). Retrospective cross-sectional study. Patients treated at Boston Children's Hospital for CS who had an ophthalmic examination that included pattern reversal (pr)VEP (2013-2014) and history of ICH based on direct measurement, papilledema, or classic features on neuroimaging and during cranial vault expansion were included. History of OSA was determined by polysomnography and associated conditions, including apnea and (adeno)tonsillectomy. Subjects were divided into 4 groups: group 1, resolved ICH absent history of OSA; group 2, resolved ICH with history of OSA; group 3, recurrent ICH absent history of OSA; and group 4, recurrent ICH with history of OSA. Predictor variables included latency of P100 component of pattern-reversal visual evoked potential, best-corrected visual acuity, optic nerve appearance, visual fields, and global retinal nerve fiber layer. Primary outcome was association of prolonged P100 latency with resolved vs recurrent ICH and OSA. Twenty-eight children met inclusion criteria (mean age 11.6 ± 6.9 years): group 1 (n= 3), group 2 (n= 6), group 3 (n= 8), and group 4 (n= 11). P100 latencies were not prolonged in groups 1 and 2. Three of 8 in group 3 and 9 of 11 in group 4 had prolonged P100 latency. Group 4 was significantly worse than group 3 (P= .005). History of OSA, in addition to recurrent ICH, is associated with greatest risk of optic neuropathy with CS. Ophthalmologists should encourage early management of OSA as well as ICH to optimize ophthalmic outcomes.
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