Active clinical trials for "Optic Nerve Diseases"

The purpose of this survey is to collect visual acuity data from patients with LHON in order to establish the clinical course (natural history) and visual acuity outcomes in patients with a genetically confirmed diagnosis of LHON. In addition, this survey will generate data that will serve as comparator for the open-label study SNT-IV-006.

This study is designed to investigate the sensitivity and specificity of the Red Reflex Test (RRT), with and without dilation, for early detection of ocular abnormalities in children and newborns. The RRT functions by shining a light from an ophthalmoscope into a participant's eye and noting the presence or absence of a red glow. Despite its use in pediatric clinics for years, this test at times fails to detect significant ocular diseases, especially located in the back of the eye, threatening visual development in this population. Therefore, the investigators aim to quantify the utility of this test as a tool for screening by comparing these findings on RRT with those of retinal photography. The investigators hypothesize that the sensitivity and specificity of the RRT will be sufficient for detecting anterior segment pathology but will be insufficient for detecting posterior segment pathology with or without dilation.

This present research project intends to collect five quantitative test series: perimetric examination using static stimuli, assessing the entire (80 degree) visual field with a fast thresholding algorithm (GATE) [Schiefer 2008] to know the extent/ magnitude of the visual field defect and its variability within the cohort and over time D-BCVA, using FrACT [Bach 2007] and EDTRS chart [Ferris 1982] RAPD (using swinging flashlight test). IOP (using applanation tonometer) RNFT and RNFV using Spectralis OCT (star scan, ring scan 2,8 mm, and volume scan) Optic disk morphology will be documented by fundus photography. This assessment of the above-mentioned data is needed in order to allow for estimation of the spontaneous course / fluctuation of the (quantified) functional and morphometric parameters of the N-AION patients during the follow-up period. This is essential for the estimation of the sample size of the subsequently intended SINN study, that is intended to compare different therapeutic strategies in N-AION patients.

This study aims to evaluate the current visual acuity of SNT-II-003 participants and compare this with the last visit from the SNT-II-003 study.

Expanded Access Program for Idebenone in Patients with Leber's Hereditary Optic Neuropathy who completed the LEROS Study

The objective of this survey is to establish the clinical course of vision loss and recovery in patients with a genetically confirmed diagnosis of Leber Hereditary Optic Neuropathy (LHON). Visual acuity changes over time from onset of symptoms and from visual acuity nadir will be the main endpoint analysed. The survey will collect historically documented visual acuity data for all patients at participating sites with a genetically confirmed diagnosis of LHON. No exclusion criteria apply. Patients are not required to attend the clinic for the survey. Data will be collected in a completely anonymous manner. Ethical approvals and data release agreements will be obtained as required by local regulations.

The objectives of this study were to: (1) evaluate the natural history of non-arteritic anterior ischemic optic neuropathy (NAION); (2) estimate the population incidence of NAION; and (3) identify potential risk factors for NAION.

This series aims at studying the peripapillary and macular vascular changes in subjects with unilateral anterior ischemic optic neuropathy via Optical Coherence Tomography Angiography (OCTA).

Clinical features, optical coherence tomography findings and surgical outcome in eyes with macular retinoschisis and detachment with normal tension glaucoma but without optic disc pit or high myopia were evaluated.

Anterior ischaemic optic neuropathy results from infarction of retrolaminar portion of the optic nerve head, caused by occlusion of the posterior ciliary artery. Non arteritic anterior ischaemic optic neuropathy affects more frequently people between 50 and 70 years of age, with vasculopathic risk factors. Arteritic anterior ischaemic optic neuropathy is caused by the Horton disease, affects an older population and is an ophthalmologic emergency because of the bilateralisation's risk. The aim of this study is to compare the peripapillar vascular density of anterior ischaemic optic neuropathy eyes (arteritic and non arteritic) with normal eyes after the disappearance of the papillar edema, with oCT-angiography. The investigators will include patients with anterior ischaemic optic neuropathy and normal patients. For each participant, the investigators will estimate the best visual acuity, intra-ocular pressure, make a fondus, measurement of retinal nervous layer thickness, ganglionar cells layer thickness, and a macular and papillar OCT angiography during a consultation (duration 30 min). The investigators will be able to know if there is a modification of the peripapillary vascularisation subsequent to the occlusion of the posterior ciliary artery there is a difference between arteritic and non arteritic anterior ischaemic optic neuropathy, there is a repercussion of the neuropathy on the retinal layers, there is a difference in peripapillar vascularisation by age.