title: Cup-to-Disc Ratio in Idiopathic Intracranial Hypertension without Papilloedema.
abstract: This study seeks to characterise potential differences in the cup-to-disc ratio (CDR) of patients with idiopathic intracranial hypertension (IIH) with papilloedema (IIHWP) compared with IIH without papilloedema (IIHWOP). The medical charts, optical coherence tomography (OCT), and digital optic disc photos of 30 patients (59 eyes) with IIHWP and 4 patients (8 eyes) with IIHWOP were reviewed retrospectively. The CDR values of the two groups were analysed using the Wilcoxon-Mann-Whitney test. Results showed a statistically significant smaller CDR in patients with IIHWP as compared with IIHWOP. These findings suggest that structural factors of the optic disc may play a role in the development of or lack thereof of papilloedema in patients with IIH.
authors.affiliation: Baylor College of Medicine Houston, Texas USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Hamill
authors.affiliation: Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch Galveston, Texas USA.
authors.forename: James D
authors.initials: JD
authors.lastname: Kim
authors.affiliation: Department of Ophthalmology, Houston Methodist Hospital Houston, Texas USA.
authors.forename: Sushma
authors.initials: S
authors.lastname: Yalamanchili
authors.affiliation: Department of Ophthalmology, Houston Methodist Hospital Houston, Texas USA.
authors.forename: Jaya M
authors.initials: JM
authors.lastname: Paranilam
authors.affiliation: Department of Ophthalmology, Houston Methodist Hospital Houston, Texas USA.
authors.forename: Nagham
authors.initials: N
authors.lastname: Al Zubidi
authors.affiliation: Baylor College of MedicineHouston, TexasUSA; Department of Ophthalmology and Visual Sciences, University of Texas Medical BranchGalveston, TexasUSA; Department of Ophthalmology, Houston Methodist HospitalHouston, TexasUSA; Departments of Ophthalmology, Neurology, and Neurosurgery, Weill Cornell Medical CollegeNew York, New YorkUSA; Department of Ophthalmology, The University of Iowa Hospitals and ClinicsIowa City, IowaUSA.
authors.forename: Andrew G
authors.initials: AG
authors.lastname: Lee
keywords: Cup-to-disc ratio; idiopathic intracranial hypertension; papilloedema