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King AJ, Hudson J, Azuara-Blanco A, Burr J, Kernohan A, Homer T, Shabaninejad H, Sparrow JM, Garway-Heath D, Barton K, Norrie J, Davidson T, Vale L, MacLennan G. Evaluating Primary Treatment for People with Advanced Glaucoma: Five-Year Results of the Treatment of Advanced Glaucoma Study. Ophthalmology 2024:S0161-6420(24)00016-2. [PMID: 38199528 DOI: 10.1016/j.ophtha.2024.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/27/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024] Open
Abstract
PURPOSE To determine whether primary trabeculectomy or medical treatment produces better outcomes in terms of quality of life (QoL), clinical effectiveness, and safety in patients with advanced glaucoma. DESIGN Multicenter randomized controlled trial. PARTICIPANTS Between June 3, 2014, and May 31, 2017, 453 adults with newly diagnosed advanced open-angle glaucoma in at least 1 eye (Hodapp classification) were recruited from 27 secondary care glaucoma departments in the United Kingdom. Two hundred twenty-seven were allocated to trabeculectomy, and 226 were allocated medical management. METHODS Participants were randomized on a 1:1 basis to have either mitomycin C-augmented trabeculectomy or escalating medical management with intraocular pressure (IOP)-reducing drops as the primary intervention and were followed up for 5 years. MAIN OUTCOME MEASURES The primary outcome was vision-specific QoL measured with the 25-item Visual Function Questionnaire (VFQ-25) at 5 years. Secondary outcomes were general health status, glaucoma-related QoL, clinical effectiveness (IOP, visual field, and visual acuity), and safety. RESULTS At 5 years, the mean ± standard deviation VFQ-25 scores in the trabeculectomy and medication arms were 83.3 ± 15.5 and 81.3 ± 17.5, respectively, and the mean difference was 1.01 (95% confidence interval [CI], -1.99 to 4.00; P = 0.51). The mean IOPs were 12.07 ± 5.18 mmHg and 14.76 ± 4.14 mmHg, respectively, and the mean difference was -2.56 (95% CI, -3.80 to -1.32; P < 0.001). Glaucoma severity measured with visual field mean deviation were -14.30 ± 7.14 dB and -16.74 ± 6.78 dB, respectively, with a mean difference of 1.87 (95% CI, 0.87-2.87 dB; P < 0.001). Safety events occurred in 115 (52.2%) of patients in the trabeculectomy arm and 124 (57.9%) of patients in the medication arm (relative risk, 0.92; 95% CI, 0.72-1.19; P = 0.54). Serious adverse events were rare. CONCLUSIONS At 5 years, the Treatment of Advanced Glaucoma Study demonstrated that primary trabeculectomy surgery is more effective in lowering IOP and preventing disease progression than primary medical treatment in patients with advanced disease and has a similar safety profile. FINANCIAL DISCLOSURE(S) Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
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Affiliation(s)
- Anthony J King
- Nottingham University Hospital, Nottingham, United Kingdom.
| | - Jemma Hudson
- Centre for Healthcare Randomised Trials (CHaRT), Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom
| | - Augusto Azuara-Blanco
- Centre for Public Health, Queen's University Belfast, Royal Victoria Hospital, Belfast, United Kingdom
| | - Jennifer Burr
- School of Medicine, University of St. Andrews, St. Andrews, United Kingdom
| | - Ashleigh Kernohan
- Health Economics Group, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Tara Homer
- Health Economics Group, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Hosein Shabaninejad
- Health Economics Group, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - John M Sparrow
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - David Garway-Heath
- National Institute for Health Research (NIHR) Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
| | - Keith Barton
- National Institute for Health Research (NIHR) Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
| | - John Norrie
- Edinburgh Clinical Trials Unit, Usher Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Tracey Davidson
- Centre for Healthcare Randomised Trials (CHaRT), Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom
| | - Luke Vale
- Health Economics Group, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Graeme MacLennan
- Centre for Healthcare Randomised Trials (CHaRT), Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom
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Chuangsuwanich T, Tun TA, Braeu FA, Wang X, Chin ZY, Panda SK, Buist M, Strouthidis N, Perera S, Nongpiur M, Aung T, Girard MJA. Differing Associations between Optic Nerve Head Strains and Visual Field Loss in Patients with Normal- and High-Tension Glaucoma. Ophthalmology 2023; 130:99-110. [PMID: 35964710 DOI: 10.1016/j.ophtha.2022.08.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 07/13/2022] [Accepted: 08/04/2022] [Indexed: 01/06/2023] Open
Abstract
PURPOSE To study the associations between optic nerve head (ONH) strains under intraocular pressure (IOP) elevation with retinal sensitivity in patients with glaucoma. DESIGN Clinic-based cross-sectional study. PARTICIPANTS Two hundred twenty-nine patients with primary open-angle glaucoma (subdivided into 115 patients with high-tension glaucoma [HTG] and 114 patients with normal-tension glaucoma [NTG]). METHODS For 1 eye of each patient, we imaged the ONH using spectral-domain OCT under the following conditions: (1) primary gaze and (2) primary gaze with acute IOP elevation (to approximately 35 mmHg) achieved through ophthalmodynamometry. A 3-dimensional strain-mapping algorithm was applied to quantify IOP-induced ONH tissue strain (i.e., deformation) in each ONH. Strains in the prelaminar tissue (PLT), the retina, the choroid, the sclera, and the lamina cribrosa (LC) were associated (using linear regression) with measures of retinal sensitivity from the 24-2 Humphrey visual field test (Carl Zeiss Meditec). This was performed globally, then locally according to a previously published regionalization scheme. MAIN OUTCOME MEASURES Associations between ONH strains and values of retinal sensitivity from visual field testing. RESULTS For patients with HTG, we found (1) significant negative linear associations between ONH strains and retinal sensitivity (P < 0.001; on average, a 1% increase in ONH strains corresponded to a decrease in retinal sensitivity of 1.1 decibels [dB]), (2) that high-strain regions colocalized with anatomically mapped regions of high visual field loss, and (3) that the strongest negative associations were observed in the superior region and in the PLT. In contrast, for patients with NTG, no significant associations between strains and retinal sensitivity were observed except in the superotemporal region of the LC. CONCLUSIONS We found significant negative associations between IOP-induced ONH strains and retinal sensitivity in a relatively large glaucoma cohort. Specifically, patients with HTG who experienced higher ONH strains were more likely to exhibit lower retinal sensitivities. Interestingly, this trend in general was less pronounced in patients with NTG, which could suggest a distinct pathophysiologic relationship between the two glaucoma subtypes.
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Affiliation(s)
- Thanadet Chuangsuwanich
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore National Eye Center, Singapore, Republic of Singapore; Department of Biomedical Engineering, National University of Singapore, Singapore, Republic of Singapore.
| | - Tin A Tun
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Republic of Singapore; Duke-NUS Medical School, Singapore, Republic of Singapore
| | - Fabian A Braeu
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore National Eye Center, Singapore, Republic of Singapore; Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Republic of Singapore
| | - Xiaofei Wang
- Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing, China
| | - Zhi Yun Chin
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore National Eye Center, Singapore, Republic of Singapore; Department of Biomedical Engineering, National University of Singapore, Singapore, Republic of Singapore
| | - Satish Kumar Panda
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore National Eye Center, Singapore, Republic of Singapore; Department of Biomedical Engineering, National University of Singapore, Singapore, Republic of Singapore
| | - Martin Buist
- Department of Biomedical Engineering, National University of Singapore, Singapore, Republic of Singapore
| | - Nicholas Strouthidis
- National Institute of Health Research, Biomedical Sciences Centre, Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, United Kingdom
| | - Shamira Perera
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Republic of Singapore
| | - Monisha Nongpiur
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Republic of Singapore; Duke-NUS Medical School, Singapore, Republic of Singapore
| | - Tin Aung
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Republic of Singapore; Duke-NUS Medical School, Singapore, Republic of Singapore
| | - Michaël J A Girard
- Ophthalmic Engineering & Innovation Laboratory, Singapore Eye Research Institute, Singapore National Eye Center, Singapore, Republic of Singapore; Duke-NUS Medical School, Singapore, Republic of Singapore; Institute for Molecular and Clinical Ophthalmology, Basel, Switzerland.
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Taneda K, Mani H, Kato N, Komizunai S, Ishikawa K, Maruya T, Hasegawa N, Takamatsu Y, Asaka T. Effects of simulated peripheral visual field loss on the static postural control in young healthy adults. Gait Posture 2021; 86:233-239. [PMID: 33774584 DOI: 10.1016/j.gaitpost.2021.03.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/08/2021] [Accepted: 03/05/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Integration of visual, vestibular, and proprioceptive sensations contributes to postural control. People with peripheral visual field loss have serious postural instability. However, the directional specificity of postural stability and sensory reweighting caused by gradual peripheral visual field loss remain unclear. RESEARCH QUESTION What are the effects of peripheral visual field loss on static postural control? METHODS Fifteen healthy young adults participated in this study. The participants were asked to stand quietly on a foam surface. Three conditions of virtual visual field loss (90°, 45°, and 15°) were provided by a head-mounted display, and ground reaction forces were collected using a force plate to calculate the displacements of the center of pressure (COP). RESULTS The root mean square (RMS), mean velocity, and 95% ellipse area of COP displacements in the horizontal plane increased, and RMS in the anteroposterior (AP) direction was unchanged under the smallest visual field condition compared to the largest one. The power spectrum density of COP displacements in the low-frequency band was decreased and that in the medium-frequency band was increased in the AP direction. SIGNIFICANCE During quiet standing of young healthy adults with peripheral visual field loss, increased peripheral visual field loss resulted in lower postural stability. Postural stability in the AP direction was maintained contrary to the functional sensitivity hypothesis. Peripheral visual field loss reduced the weighting of the visual input and increased that of the vestibular input in the AP direction to maintain equilibrium.
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Affiliation(s)
- Kenji Taneda
- Graduate School of Health Sciences, Hokkaido University, Japan.
| | - Hiroki Mani
- Faculty of Health Sciences, Hokkaido University, Japan.
| | - Norio Kato
- Faculty of Health Sciences, Hokkaido University of Science, Japan.
| | - Shunsuke Komizunai
- Graduate School of Information Science and Technology, Hokkaido University, Japan.
| | - Keita Ishikawa
- Graduate School of Health Sciences, Hokkaido University, Japan.
| | - Takashi Maruya
- Graduate School of Health Sciences, Hokkaido University, Japan.
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Chow-Wing-Bom H, Dekker TM, Jones PR. The worse eye revisited: Evaluating the impact of asymmetric peripheral vision loss on everyday function. Vision Res 2020; 169:49-57. [PMID: 32179339 DOI: 10.1016/j.visres.2019.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 10/23/2019] [Accepted: 10/28/2019] [Indexed: 10/24/2022]
Abstract
In instances of asymmetric peripheral vision loss (e.g., glaucoma), binocular performance on simple psychophysical tasks (e.g., static threshold perimetry) is well-predicted by the better seeing eye alone. This suggests that peripheral vision is largely 'better-eye limited'. In the present study, we examine whether this also holds true for real-world tasks, or whether even a degraded fellow eye contributes important information for tasks of daily living. Twelve normally-sighted adults performed an everyday visually-guided action (finding a mobile phone) in a virtual-reality domestic environment, while levels of peripheral vision loss were independently manipulated in each eye (gaze-contingent blur). The results showed that even when vision in the better eye was held constant, participants were significantly slower to locate the target, and made significantly more head- and eye-movements, as peripheral vision loss in the worse eye increased. A purely unilateral peripheral impairment increased response times by up to 25%, although the effect of bilateral vision loss was much greater (>200%). These findings indicate that even a degraded visual field still contributes important information for performing everyday visually-guided actions. This may have clinical implications for how patients with visual field loss are managed or prioritized, and for our understanding of how binocular information in the periphery is integrated.
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Affiliation(s)
- Hugo Chow-Wing-Bom
- Institute of Ophthalmology, University College London (UCL), London, United Kingdom
| | - Tessa M Dekker
- Institute of Ophthalmology, University College London (UCL), London, United Kingdom
| | - Pete R Jones
- Institute of Ophthalmology, University College London (UCL), London, United Kingdom; National Institute for Health Research Moorfields Biomedical Research Centre, London, United Kingdom.
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Hepworth L, Rowe F. Short-Listing the Program Choice for Perimetry in Neurological Conditions (PoPiN) Using Consensus Methods. Br Ir Orthopt J 2019; 15:125-132. [PMID: 32999983 PMCID: PMC7510368 DOI: 10.22599/bioj.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 10/30/2019] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Neurological conditions frequently cause visual field loss, commonly resulting in perimetry requests for suspected or known conditions. Currently there are no national guidelines for perimetry in neurological conditions. A wide choice of perimetry programs exists. An inappropriate program choice could fail to detect visual field loss. Two phases in this study determined preference of perimetry programs for detection of visual field loss in four common neurological conditions (idiopathic intracranial hypertension (IIH), optic neuropathies, chiasmal compression and stroke), to aid the design of research and clinical practice guidelines. METHODS A survey consisted of 47 perimetry programs. Orthoptists and neuro-ophthalmologists were asked which perimetry programs they considered important for use in the four neurological conditions. These programs were short-listed for discussion in a consensus meeting. A nominal group technique was used for the consensus meeting to reach consensus on the three most favoured perimetry programs appropriate for the four conditions. RESULTS Twenty-six participants completed the survey (51% return rate). Nine programs were found to be not applicable to any of the conditions. The short-lists for the conditions varied between six and ten perimetry programs. Seven participants discussed the survey results at a consensus meeting to agree the three most favoured perimetry programs for IIH, optic neuropathy and chiasmal compression (manual/semi manual kinetic, static 30-2 and full-field 120) and for stroke (manual/semi manual kinetic, static 30-2 and monocular Esterman). CONCLUSION A wide range of perimetry programmes were explored thoroughly through survey and consensus methods in order to determine clinician preference for their use in neuro-ophthalmic practice. The three most favoured perimetry programs for the four conditions was established.
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Abstract
Aim: To conduct a feasibility study using vertical reading for stroke survivors with homonymous hemianopia. Feasibility objectives included assessing the appropriateness of testing methods, outcomes and amount of recruitment possible. Vertical reading has yet no empirical evidence for its use in homonymous hemianopia. Method: A cross-over design was used involving stroke survivors with homonymous hemianopia. Three reading directions (horizontal; 90° clockwise rotation; 90° anti-clockwise rotation) were assessed in a randomised order whilst measuring reading speed. Results: Seven participants with stroke-induced homonymous hemianopia were recruited (25.9% recruitment rate). The mean horizontal reading speed was 120.3 (SD 33.9) words per minute. When reading vertically (downwards) at 90° clockwise rotation the mean reading speed was 62.7 (SD 43.4) words per minute. When reading vertically (upwards) at 90° anti-clockwise rotation the mean reading speed was 74.6 (SD 53.5) words per minute. Conclusions: This feasibility study has informed and provided vital information for planning and developing future studies for vertical reading. The primary outcome measure for future studies should be reading acuity, taking account of both speed and errors. Further preliminary studies are required which incorporate a practice element to assess for any improvement over time.
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Hepworth LR, Rowe FJ. Programme choice for perimetry in neurological conditions (PoPiN): a systematic review of perimetry options and patterns of visual field loss. BMC Ophthalmol 2018; 18:241. [PMID: 30200926 PMCID: PMC6131852 DOI: 10.1186/s12886-018-0912-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/31/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Visual field loss occurs frequently in neurological conditions and perimetry is commonly requested for patients with suspected or known conditions. There are currently no guidelines for how visual fields in neurological conditions should be assessed. There is a wide range of visual field programs available and the wrong choice of program can potentially fail to detect visual field loss. We report the results of a systematic review of the existing evidence base for the patterns of visual field loss in four common neurological conditions and the perimetry programs used, to aid the design of future research and clinical practice guidelines. METHODS A systematic search of the literature was performed. The inclusion criteria required studies testing and/or reporting visual field loss in one or more of the target conditions; idiopathic intracranial hypertension, optic neuropathy, chiasmal compression and stroke. Scholarly online databases and registers were searched. In addition articles were hand searched. MESH terms and alternatives in relation to the four target conditions and visual fields were used. Study selection was performed by two authors independently. Data was extracted by one author and verified by a second. RESULTS This review included 330 studies; 51 in relation to idiopathic intracranial hypertension, 144 in relation to optic neuropathy, 105 in relation to chiasmal compression, 21 in relation to stroke and 10 in relation to a mixed neuro-ophthalmology population. CONCLUSIONS Both the 30-2 and 24-2 program using the Humphrey perimeter were most commonly reported followed by manual kinetic perimetry using the Goldmann perimeter across all four conditions included in this review. A wide variety of other perimeters and programs were reported. The patterns of visual field defects differ much more greatly across the four conditions. Central perimetry is used extensively in neurological conditions but with little supporting evidence for its diagnostic accuracy in these, especially considering the peripheral visual field may be affected first whilst the central visual field may not be impacted until later in the progression. Further research is required to reach a consensus on how best to standardise perimetry for neurological conditions.
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Affiliation(s)
- Lauren R Hepworth
- Department of Health Services Research, University of Liverpool, Waterhouse Building, Block B, First Floor1-5 Brownlow Street, Liverpool, L69 3GL, UK
| | - Fiona J Rowe
- Department of Health Services Research, University of Liverpool, Waterhouse Building, Block B, First Floor1-5 Brownlow Street, Liverpool, L69 3GL, UK.
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Abstract
Homonymous hemianopia from stroke causes visual disability. Although some patients experience spontaneous improvement, others have limited to no change and may be left with a severe disability. Current rehabilitation strategies are compensatory and cannot restore function. Animal studies suggest that central nervous system plasticity could allow for redirection of lost visual function into undamaged areas of cortex. A commercial therapy system was developed, from which claims of visual field expansion were disputed by independent researchers. The treatment remains controversial with seemingly contradictory data being generated. Continued research is underway to demonstrate the (non-)efficacy of this treatment method.
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Affiliation(s)
- Alexander Frolov
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Jeanne Feuerstein
- Department of Neurology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Prem S Subramanian
- Department of Ophthalmology, University of Colorado School of Medicine, Mail Stop F731, 1675 Aurora Court, Aurora, CO 80045, USA.
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Spelbrink EM, Mabud TS, Reimer R, Porter BE. Plasma taurine levels are not affected by vigabatrin in pediatric patients. Epilepsia 2016; 57:e168-72. [PMID: 27344989 DOI: 10.1111/epi.13447] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2016] [Indexed: 11/29/2022]
Abstract
Vigabatrin is a highly effective antiseizure medication, but its use is limited due to concerns about retinal toxicity. One proposed mechanism for this toxicity is vigabatrin-mediated reduction of taurine. Herein we assess plasma taurine levels in a retrospective cohort of children with epilepsy, including a subset receiving vigabatrin. All children who underwent a plasma amino acid analysis as part of their clinical evaluation between 2006 and 2015 at Stanford Children's Health were included in the analysis. There were no significant differences in plasma taurine levels between children taking vigabatrin (n = 16), children taking other anti-seizure medications, and children not taking any anti-seizure medication (n = 556) (analysis of variance [ANOVA] p = 0.841). There were, however, age-dependent decreases in plasma taurine levels. Multiple linear regression revealed no significant association between vigabatrin use and plasma taurine level (p = 0.87) when controlling for age. These results suggest that children taking vigabatrin maintain normal plasma taurine levels, although they leave unanswered whether taurine supplementation is necessary or sufficient to prevent vigabatrin-associated visual field loss. They also indicate that age should be taken into consideration when evaluating taurine levels in young children.
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Affiliation(s)
- Emily M Spelbrink
- Department of Neurology, Stanford University School of Medicine, Stanford, California, U.S.A.,Department of Neurology, Stanford Children's Health, Palo Alto, California, U.S.A
| | - Tarub S Mabud
- Department of Neurology, Stanford University School of Medicine, Stanford, California, U.S.A
| | - Richard Reimer
- Department of Neurology, Stanford University School of Medicine, Stanford, California, U.S.A
| | - Brenda E Porter
- Department of Neurology, Stanford University School of Medicine, Stanford, California, U.S.A.,Department of Neurology, Stanford Children's Health, Palo Alto, California, U.S.A
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Abstract
The ultimate goal of glaucoma management is the preservation of patients’ visual function and quality of life (QoL). The disease itself as well as the medical or surgical treatment can have an enormous impact on a patient’s QoL. Even the mere diagnosis of a chronic, irreversible, potentially blinding disorder can adversely affect the patient’s sense of well-being and QoL by eliciting significant anxiety. Patients with primary open-angle glaucoma rarely present with visual symptoms, at least early in the course of the disease. A better understanding of patient-reported QoL can improve patient–physician interaction and enhance treatment adherence by customizing treatment options based on individual patient profile, thus optimizing long-term prognosis. These aspects are summarized and critically appraised in this article.
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Affiliation(s)
- Luciano Quaranta
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy.
| | - Ivano Riva
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Chiara Gerardi
- IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | | | - Irene Floriani
- IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Anastasios G P Konstas
- 1st and 3rd University Departments of Ophthalmology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Kaneko T, Sakai T, Miyabe-Nishiwaki T, Tomonaga M. A case of naturally occurring visual field loss in a chimpanzee with an arachnoid cyst. Neuropsychologia 2013; 51:2856-62. [PMID: 24036355 DOI: 10.1016/j.neuropsychologia.2013.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 08/26/2013] [Accepted: 09/04/2013] [Indexed: 10/26/2022]
Abstract
Deficits in the occipital cortex have varying consequences among mammalian species. Such variations are indicative of evolutionary transitions in the striate cortical contribution to visually guided behavior. However, little is known about the role of the striate cortex in visually guided behavior in chimpanzees due to ethical concerns about invasive experiments and methodological limitations such as the inability to monitor gaze movements. We had the opportunity to study the behavioral consequences of a deficit in the occipital cortex in a chimpanzee with a naturally occurring arachnoid cyst in her right occipital lobe. We assessed the chimpanzee's ability to detect a small light probe (0.5 visual degree, Michelson contrast > 0.9) presented at several locations in the visual field while monitoring gaze direction using an infra-red remote eye-tracker recently introduced to studies of great apes. The results showed the chimpanzee was unable to detect the probe in the lower left quadrant of the visual field, suggesting severe loss of contrast sensitivity in a part of hemivisual field that is retinotopically corresponded to the hemisphere of the cyst. A chimpanzee with a naturally occurring deficit in the right striate cortex and the availability of remote eye-tracking technology presented a unique opportunity to compare the role of the occipital lobe in visually guided behavior among various primate species.
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Affiliation(s)
- Takaaki Kaneko
- Primate Research Institute, Kyoto University, Inuyama, Aichi 484-8506, Japan.
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Rajsekar K, Rajsekar YL, Chaturvedi SK. Psycho ophthalmology : the interface between psychiatry and ophthalmology. Indian J Psychiatry 1999; 41:186-96. [PMID: 21455389 PMCID: PMC2962991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The practice of ophthalmology and psychiatry meet over in several aspects of patient diagnosis, management & therapy. The ophthalmologists should be able to recognise signs and symptoms of psychiatric disorder. Non organic disorders could have ophthalmologic manifestations related both the afferent system and motor system related symptoms. Ophthalmologist should be aware of conditions like functional vision loss and visual field loss, voluntary nystagmus, spasm of near reflex, non-organic disturbances of eyelid function, ocular and facial sensation and psychosomatic diseases of eye.Many of the drugs used in psychiatry may cause ophthalmological side effects. These drugs can affect retina, optic nerve, higher visual centre, cornea, lens, ocular motor system and intra ocular pressure. Thalidomide used in 1950s was known to cause congenital ocular defects. Psychological reaction and psychiatric complications are well known after cataract surgery.Other then these problems there are psychiatric disorders which can present ophthalmologic signs and symptoms.
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Affiliation(s)
- K Rajsekar
- KIRTANA RAJSEKAR, MD., Department of Psychiatry, National Institute of Mental Health & Neurosciences, Bangalore-560 029
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