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Structure-function correlates of vision loss in neuromyelitis optica spectrum disorders. Sci Rep 2022; 12:17545. [PMID: 36266394 PMCID: PMC9585067 DOI: 10.1038/s41598-022-19848-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 09/06/2022] [Indexed: 01/13/2023] Open
Abstract
Optic neuritis (ON) in neuromyelitis optica spectrum disorders (NMOSD) regularly leads to more profound vision loss compared to multiple sclerosis (MS) and myelin-oligodendrocyte-glycoprotein-antibody associated disease (MOGAD). Here we investigate ON-related vision loss in NMOSD compared to MS and MOGAD in order to identify neuroaxonal and retinal contributors to visual dysfunction. In this retrospective study we included patients with aquaporin-4-antibody seropositive NMOSD (n = 28), MOGAD (n = 14), MS (n = 29) and controls (n = 14). We assessed optic nerve damage and fovea morphometry by optical coherence tomography. Visual function was assessed as high (HCVA) and low contrast visual acuity (LCVA), and visual fields' mean deviation (MD). In all diseases, lower visual function was associated with peripapillary retinal nerve fiber layer (pRNFL) and ganglion cell and inner plexiform layer (GCIP) thinning following a broken stick model, with pRNFL and GCIP cutoff point at ca. 60 µm. HCVA loss per µm pRNFL and GCIP thinning was stronger in NMOSD compared with MOGAD. Foveal inner rim volume contributed to MD and LCVA in NMOSD eyes, only. Together these data supports that visual dysfunction in NMOSD is associated with neuroaxonal damage beyond the effect seen in MS and MOGAD. A primary retinopathy, respectively Müller cell pathology, may contribute to this effect.
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Deschamps R, Shor N, Vignal C, Guillaume J, Boudot de la Motte M, Salviat F, Lecler A, Marignier R, Hage R, Coulette S, Bidot S, Gueguen A, Mauget-Faÿsse M, Bensa C, Vasseur V, Gout O, Lamirel C. A prospective longitudinal study on prognostic factors of visual recovery and structural change after a first episode of optic neuritis. Eur J Neurol 2022; 29:2781-2791. [PMID: 35617154 DOI: 10.1111/ene.15420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/18/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND To determine the role of OCT in predicting the final visual and structural outcome, and evaluate the correlation between functional eye outcome and retinal changes, in patients with first episode of optic neuritis (ON). METHODS In this prospective study, consecutive adult patients with acute ON underwent ophthalmological evaluation at baseline and 1 and 12 months, including OCT measurements of peripapillary retinal nerve fiber layer (pRNFL), macular ganglion cell and innerplexiform layer, and innernuclear layer thicknesses, high- and low-contrast visual acuity, visual field assessment, and baseline brain MRI. Univariate and multivariate linear regressions were used to assess predictive factors of outcome. Correlations between 12-month visual function and retinal structure were estimated by Spearman coefficients. Two groups of patients were analysed, with or without multiple sclerosis (MS). RESULTS Among 116 patients, 79 (68.1%) had MS, and 37 (31.9%) had ON not related to MS (including 19 idiopathic (i.e isolated) ON, and 13 and 5 with myelin oligodendrocyte glycoprotein and aquaporin-4 antibodies, respectively). We found no independent predictive factor of visual and retinal outcome. Analysis of the relationship between the visual field test (mean deviation) and pRNFL thickness demonstrated a threshold of 75.4 μm and 66.4 μm, below which the mean deviation was worse, for patients with MS (p=0.007) and without MS (p<0.001), respectively. CONCLUSIONS We found that inner retinal layer measurements during the first month are not predictive of final outcome. The critical threshold of axonal integrity, below which visual function is damaged, is different between patients with and without MS.
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Affiliation(s)
- Romain Deschamps
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Natalia Shor
- Department of Radiology, Hôpital Fondation Adolphe de Rothschild, Paris, France.,Department of Neuro-Radiology, Assistance Publique Hôpitaux de Paris, Hôpitaux Universitaires La Pitié Salpêtrière - Sorbonne Université, Paris, France
| | - Catherine Vignal
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Jessica Guillaume
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | | | - Flore Salviat
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Augustin Lecler
- Department of Radiology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Romain Marignier
- Department of Neurology and Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hospices civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon/Bron, France
| | - Rabih Hage
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Sarah Coulette
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Samuel Bidot
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Antoine Gueguen
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Martine Mauget-Faÿsse
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Caroline Bensa
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Vivien Vasseur
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Olivier Gout
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Cedric Lamirel
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
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Deschamps R, Philibert M, Lamirel C, Lambert J, Vasseur V, Gueguen A, Bensa C, Lecler A, Marignier R, Vignal C, Gout O. Visual field loss and structure-function relationships in optic neuritis associated with myelin oligodendrocyte glycoprotein antibody. Mult Scler 2020; 27:855-863. [PMID: 32633601 DOI: 10.1177/1352458520937281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND A paradoxical discrepancy between severe peripapillary retinal nerve fiber layer (pRNFL) atrophy and good visual outcome had been reported in patients with myelin oligodendrocyte glycoprotein-immunoglobulin G (MOG-IgG)-associated optic neuritis (ON). However, only visual acuity (VA) was assessed. OBJECTIVES To study visual field (VF) outcomes of patients with MOG-IgG-associated ON and evaluate the correlation between functional eye outcome and retinal structural changes assessed by optical coherence tomography. METHODS The records of 32 patients with MOG-IgG-associated ON who underwent ophthalmological examination at least 12 months after ON onset were reviewed. Degree of VF disability was determined by mean deviation (MD). RESULTS At final assessment (median, 35 months), 4.2% of 48 affected eyes (AE) had VA ⩽ 0.1, 40% had abnormal MD, and among AE with final VA ⩾ 1.0, 31% had mild to moderate damage. Thinning of the inner retinal layers was significantly correlated with MD impairment. Analysis demonstrated a threshold of pRNFL thickness (50 µm), below which MD was significantly worse (mean, -2.27 dB vs -17.72 dB; p = 0.0003). ON relapse was significantly associated with poor visual outcome assessed by MD. CONCLUSION Functional impairment measured with VF is not rare, and MD assessment better reflects actual structural damage.
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Affiliation(s)
- Romain Deschamps
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Manon Philibert
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France/Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Cedric Lamirel
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Jerome Lambert
- Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany/UMR1153 ECSTRRA Team INSERM, Paris, France
| | - Vivien Vasseur
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Antoine Gueguen
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Caroline Bensa
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Augustin Lecler
- Department of Radiology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Romain Marignier
- Department of Neurology, Hospices civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon, France
| | - Catherine Vignal
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Olivier Gout
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
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Barć K, Gospodarczyk-Szot K, Nojszewska M, Podlecka-Piętowska A, Zakrzewska-Pniewska B. The relationship between aquaporin-4 antibody status and visual tract integrity in neuromyelitis optica spectrum disorders: A visual evoked potential study. Mult Scler Relat Disord 2020; 44:102265. [PMID: 32575026 DOI: 10.1016/j.msard.2020.102265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/01/2020] [Accepted: 06/03/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Optic neuritis (ON) is one of the hallmark symptomatic features of neuromyelitis optica spectrum disorders (NMOSD). The majority of patients with NMOSD present highly specific autoantibodies against aquaporin-4 (AQP4). A number of studies have reported poor visual acuity outcomes in individuals with AQP4 seropositive NMOSD, but no such relationship has been found with regard to visual evoked potentials (VEP) parameters such as the amplitude and latency of the P100 component. In this paper, we aimed (i) to describe VEP responses in patients with NMOSD; (ii) to analyze those results based on a scoring system; and (iii) to investigate the association between the VEPs and AQP4 antibody status. METHODS We retrospectively analysed the VEP responses of 40 patients with a diagnosis of NMOSD (according to the 2015 IPND criteria), including 16 with AQP4-postive status (AQP4[+]) and 24 with AQP4-negative status (AQP4[-]). In the first step, we measured the P100 peak latency and P100-N2 peak-to-peak amplitude in each patient. In the second, we converted these measures to the VEP score (0-10) using the scoring proposed by Jung et al. (2008). All recordings were performed using the same VEP device and testing protocol. RESULTS Abnormal VEPs were recorded in 25 of 40 patients (62.6%). Of these, 17 (42.5%) had prolonged P100 latency, and 8 (20%) had no response detected in at least one eye. The patients with ON as the initial relapse symptom had significantly higher median VEP scores than those who experienced the longitudinally extensive transverse myelitis (LETM) at the disease onset (7.0 [in-terquar-tile range (IQR), 2.0-8.0] vs. 0.0 [IQR, 0.0-4.0], p<0.001). A lack of VEP response in at least one eye was detected more frequently in the AQP4[+] group than the AQP4[-] group (7/16 vs. 1/24, p<0.005). Logistic regression model controlling for age, gender, disease duration, and the type of relapse at onset showed an independent impact of AQP4[+] status (OR=35.45, p = 0.018) on the higher rate of absent VEP responses. In the entire group of patients (n = 40), those with AQP4[+] showed a small tendency towards a higher median VEP score (4.0 [IQR, 0.0-7.8] vs. 1.0 [IQR, 0.0-4.0], p = 0.304). Among individuals with abnormal responses (n = 25), the patients with AQP4[+] had significantly higher median VEP scores (7.0 [IQR, 4.0-8.5] vs. 3.0 [IQR, 1.0-7.0], p = 0.034) and more common bilateral involvement of the optic tracts (80% vs. 40%, p = 0.048) than those who were seronegative for anti-AQP4 antibody. A median regression analysis model controlling for age, gender, disease duration, type of onset, and number of relapses in last 12 months showed an independent association between the AQP4-positive status and a higher VEP score in patients with NMOSD (t = 2.882, df=2, p = 0.007). CONCLUSION VEP study remains a useful tool in the assessment of NMOSD patients. Due to the high prevalence of absent VEPs in NMOSD patients, the scoring system appears to be more applicable for the precise analysis of VEP recordings. There is a positive association between the AQP-positive serostatus and the poorer outcome in VEP responses, especially in patients with severe impairment of the optic nerve(s).
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Affiliation(s)
- Krzysztof Barć
- Department of Neurology, University Clinical Centre of Medical University of Warsaw, Warsaw, Poland.
| | | | - Monika Nojszewska
- Department of Neurology, Medical University of Warsaw, Warsaw, Poland
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