title: Macular Ganglion Cell Layer and Peripapillary Retinal Nerve Fibre Layer Thickness in Patients with Unilateral Posterior Cerebral Artery Ischaemic Lesion: An Optical Coherence Tomography Study.
abstract: The purpose of this study is to evaluate the macular ganglion cell layer (GCL) and peripapillary retinal nerve fibre layer (RNFL) thickness in patients with unilateral posterior cerebral artery (PCA) ischaemic lesions using spectral-domain optical coherence tomography (SD-OCT). A prospective, case-control study of patients with unilateral PCA lesion was conducted in the neuro-ophthalmology clinic of Centro Hospitalar Lisboa Central. Macular and peripapillary SD-OCT scans were performed in both eyes of each patient. Twelve patients with PCA lesions (stroke group) and 12 healthy normal controls were included in this study. Peripapillary RNFL comparison between both eyes of the same subject in the stroke group found a thinning in the superior-temporal (p= 0.008) and inferior-temporal (p= 0.023) sectors of the ipsilateral eye and nasal sector (p= 0.003) of the contralateral eye. Macular GCL thickness comparison showed a reduction temporally in the ipsilateral eye (p= 0.004) and nasally in the contralateral eye (p= 0.002). Peripapillary RNFL thickness was significantly reduced in both eyes of patients with PCA compared with controls, affecting all sectors in the contralateral eye and predominantly temporal sectors in the ipsilateral eye. A statistically significant decrease in macular GCL thickness was found in both hemiretinas of both eyes of stroke patients when compared with controls (p< 0.05). This study shows that TRD may play a role in the physiopathology of lesions of the posterior visual pathway.
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central, Lisbon, Portugal; Serviço de Oftalmologia, Hospital de Santo António dos, Capuchos, Lisbon, Portugal.
authors.forename: Rita
authors.initials: R
authors.lastname: Anjos
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central , Lisbon, Portugal.
authors.forename: Luisa
authors.initials: L
authors.lastname: Vieira
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central , Lisbon, Portugal.
authors.forename: Livio
authors.initials: L
authors.lastname: Costa
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central, Lisbon, Portugal; Serviço de Oftalmologia, Hospital de Santo António dos, Capuchos, Lisbon, Portugal.
authors.forename: André
authors.initials: A
authors.lastname: Vicente
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central , Lisbon, Portugal.
authors.forename: Arnaldo
authors.initials: A
authors.lastname: Santos
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central , Lisbon, Portugal.
authors.forename: Nuno
authors.initials: N
authors.lastname: Alves
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central , Lisbon, Portugal.
authors.forename: Duarte
authors.initials: D
authors.lastname: Amado
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central , Lisbon, Portugal.
authors.forename: Joana
authors.initials: J
authors.lastname: Ferreira
authors.affiliation: Ophthalmology Department, Centro Hospitalar de Lisboa Central, Lisbon, Portugal; Serviço de Oftalmologia, Hospital de Santo António dos, Capuchos, Lisbon, Portugal.
authors.forename: João Paulo
authors.initials: JP
authors.lastname: Cunha
keywords: Macular ganglion cell layer; peripapillary retinal nerve fibre layer; transneural retrograde degeneration