title: Elevated Intraocular Pressure due to Arteriovenous Fistula between External Carotid Artery and Facial Vein.
abstract: Aqueous outflow via the conventional outflow pathway is dependent on the pressure gradient between intraocular pressure (IOP) and episcleral venous pressure (EVP). Elevated IOP resulting from increased EVP is a well-known complication of arteriovenous fistulas, which are usually between the carotid artery and the cavernous sinus. Arteriovenous malformations usually occur spontaneously, after a trauma or from iatrogenic causes, and they manifest with findings of chemosis, dilatation of the conjunctival vessels, exophthalmos, and extraocular motility limitation. In this study, we present a case of elevated IOP due to facial arteriovenous malformations following a functional neck dissection surgery that caused intraocular pressure elevation.
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Kafkas University, Merkez, 36100 Kars, Turkey.
authors.forename: Halil Huseyin
authors.initials: HH
authors.lastname: Cagatay
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Kafkas University, Merkez, 36100 Kars, Turkey.
authors.forename: Metin
authors.initials: M
authors.lastname: Ekinci
authors.affiliation: Department of Ophthalmology, Şişli Etfal Training and Research Hospital, 34371 Istanbul, Turkey.
authors.forename: Selam Yekta
authors.initials: SY
authors.lastname: Sendul
authors.affiliation: Department of Ophthalmology, Çerkezköy State Hospital, 59500 Tekirdağ, Turkey.
authors.forename: Ceylan
authors.initials: C
authors.lastname: Uslu
authors.affiliation: Department of Ophthalmology, Şişli Etfal Training and Research Hospital, 34371 Istanbul, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Demir
authors.affiliation: Department of Radiology, Kars State Hospital, 36000 Kars, Turkey.
authors.forename: Sıtkı Mert
authors.initials: SM
authors.lastname: Ulusay
authors.affiliation: Department of Radiology, Şişli Etfal Training and Research Hospital, 34371 Istanbul, Turkey.
authors.forename: Ender
authors.initials: E
authors.lastname: Uysal
authors.affiliation: Department of Otorhinolaryngology, Terme State Hospital, 55600 Samsun, Turkey.
authors.forename: Selma
authors.initials: S
authors.lastname: Seker