Anton's syndrome is a rare cause of vertigo. Its diagnosis may be hindered by confabulatory claims of normal vision by the patient. Any cause of cortical blindness may result in Anton's syndrome, the commonest being a posterior circulation stroke. Here, we highlight a case of Anton's syndrome that was a result of a left vertebral artery thrombosis, presenting initially with vertigo. The patient had a background of previously undiagnosed bilateral posterior communicating artery and right vertebral artery hypoplasia.
ChuangY.M., LiuC.Y., PanP.J., LinC.P.Posterior communicating artery hypoplasia as a risk factor for acute ischemic stroke in the absence of carotid artery occlusion. J Clin Neurosci2008; 15(12): 1376–81.
2.
MacchiC., CatiniC., FedericoC., GulisanoM., PaciniP, CecchiF.Magnetic resonance angiographic evaluation of circulus arteriosus cerebri (circle of Willis): a morphologic study in 100 human healthy subjects. Ital J Anat Embryol1996; 101(2): 115–23.
3.
VereshchaginN.V.The pathology of vertebral-basilar system and cerebral circulation disorders.Moscow: Meditsina; 1980.
4.
HoksbergenA.W., LegemateD.A., CsibaL., CsátiG., SíróP., FülesdiB.Absent collateral function of the circle of Willis as risk factor for ischemic stroke. Cerebrovasc Dis2003; 16(3): 191–8.
5.
PerrenF., PogliaD., LandisT., SztajzelR.Vertebral artery hypoplasia: a predisposing factor for posterior circulation stroke?Neurology2007; 68(1): 65–7.
6.
MisraM., RathS., MohantyA.B.Anton syndrome and cortical blindness due to bilateral occipital infarction. Indian J Ophthalmol1989; 37(4): 196.
7.
ArgentaP.A., MorganM.A.Cortical blindness and Anton syndrome in a patient with obstetric haemorrhage. Obstet Gynecol1998; 91(5 Pt 2): 810–2.
8.
McDanielK.D., McDanielL.D.Anton's syndrome in a patient with posttraumatic optic neuropathy and bifrontal contusions. Arch Neurol1991; 48(1): 101–5.
9.
MenonV., SinghJ., PrakashP., KumarA.Anton's syndrome a case report. Neuro-opthamology1985; 5(2): 125–8.
10.
SincichL.C., ParkK.F., WohlgemuthM.J., HortonJ.C.Bypassing V1: a direct geniculate input to area MT. Nat Neurosci2004; 7(10): 1123–8.
11.
MenonG.J., RahmanI., MenonS.J., DuttonG.N.Complex visual hallucinations in the visually impaired: the Charles Bonnet syndrome. Surv Ophthalmol2003; 48(1): 58–72.
