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      Choroidal thickness changes in systemic lupus erythematosus patients

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          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Purpose

          To compare choroidal thickness (CT) between patients with systemic lupus erythematosus (SLE) without ophthalmologic manifestations and a control group. To study the effects in CT of disease duration, activity index, medication and systemic comorbidities.

          Methods

          Cross-sectional study where spectral-domain optical coherence tomography with enhanced depth imaging was used to measure CT in 13 locations, subfoveally and at 500-µm intervals along a horizontal and a vertical section from the fovea. Linear regression models were used.

          Results

          Sixty-eight SLE patients and fifty healthy controls were enrolled. CT multivariable analysis revealed lower values in SLE patients (12.93–26.73 µm thinner) in all locations, except the inferior quadrants (6.48–10.44 µm thicker); however, none of these results reached statistical significance. Contrary to the control group, the normal topographic variation in CT between macular quadrants and from the center to the periphery was not observed in the SLE group. Multivariable analysis in the SLE group alone revealed a significant negative association with anticoagulants (50.10–56.09 µm thinner) and lupus nephritis (40.79–58.63 µm thinner). Contrary to controls, the CT of SLE patients did not respond to changes in mean arterial pressure.

          Conclusion

          CT in SLE appears to be thinner, particularly in the subset of patients with nephritis and taking anticoagulants, suggesting more advanced systemic vascular disease. Choroidal responses to hemodynamic changes may also be altered in SLE.

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          Most cited references 41

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          A pilot study of enhanced depth imaging optical coherence tomography of the choroid in normal eyes.

          To measure macular choroidal thickness in normal eyes at different points using enhanced depth imaging (EDI) optical coherence tomography (OCT) and to evaluate the association of choroidal thickness and age. Retrospective, observational case series. EDI OCT images were obtained in patients without significant retinal or choroidal pathologic features. The images were obtained by positioning a spectral-domain OCT device close enough to the eye to acquire an inverted image. Seven sections were obtained within a 5 x 30-degree area centered at the fovea, with 100 scans averaged for each section. The choroid was measured from the outer border of the retinal pigment epithelium to the inner scleral border at 500-microm intervals of a horizontal section from 3 mm temporal to the fovea to 3 mm nasal to the fovea. Statistical analysis was performed to evaluate variations of choroidal thickness at each location and to correlate choroidal thickness and patient age. The mean age of the 30 patients (54 eyes) was 50.4 years (range, 19 to 85 years), and 14 patients (46.7%) were female. The choroid was thickest underneath the fovea (mean, 287 microm; standard deviation, +/- 76 microm). Choroidal thickness decreased rapidly in the nasal direction and averaged 145 microm (+/- 57 microm) at 3 mm nasal to the fovea. Increasing age was correlated significantly with decreasing choroidal thickness at all points measured. Regression analysis suggested that the subfoveal choroidal thickness decreased by 15.6 microm for each decade of life. Choroidal thickness seems to vary topographically within the posterior pole. The thickness of the choroid showed a negative correlation with age. The decrease in the thickness of the choroid may play a role in the pathophysiologic features of various age-related ocular conditions.
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            Ocular and optic nerve blood flow at normal and increased intraocular pressures in monkeys (Macaca irus): a study with radioactively labelled microspheres including flow determinations in brain and some other tissues.

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              Three-dimensional 1060-nm OCT: choroidal thickness maps in normal subjects and improved posterior segment visualization in cataract patients.

              To evaluate the performance and potential clinical role of three-dimensional (3D) 1060-nm OCT by generating choroidal thickness (ChT) maps in patients of different ages with different degrees of ametropia and axial lengths and to investigate the effect of cataract grade on OCT retinal imaging quality. Axial lengths (ALs) and 45° fundus photographs were acquired from 64 eyes (34 healthy subjects, 19 to 80 years, ametropia +3 to -10 D). 3D 1060-nm OCT was performed over a 36° × 36° field of view with ∼7-μm axial resolution and up to 70 frames/s (512 A-scans/frame). ChT maps between retinal pigment epithelium and the choroidal-scleral interface, were generated and statistically analyzed. A further 30 eyes (19 subjects), with cataracts assessed with the LOCS III scale, were imaged with 3D 1060-nm OCT and 800-nm OCT, and visualization of the posterior segment was compared qualitatively. In 64 eyes, ChT maps displayed a thickness decrease with increasing AL. Subfoveal ChT was 315 ± 106 μm (mean ± SD), negatively correlated with AL (R(2) = -0.47, P 24.5 mm showed a larger variation and a thicker ChT superiorly than inferiorly. Reduced signal strength in cataractous eyes was found in 65% of the 800-nm OCT images, but in only 10% of the 1060-nm OCT images. The imaging performance of 3D 1060-nm OCT is unique, producing maps that show the variation in ChT over the entire field of view, in relation to axial length. This imaging system has the potential of visualizing a novel clinical diagnostic biomarker. Compared with 800-nm OCT, it provides superior visualization of the posterior pole in cataractous eyes.
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                Author and article information

                Journal
                Clin Ophthalmol
                Clin Ophthalmol
                OPTH
                clinop
                Clinical Ophthalmology (Auckland, N.Z.)
                Dove
                1177-5467
                1177-5483
                20 August 2019
                2019
                : 13
                : 1567-1578
                Affiliations
                [1 ]Department of Ophthalmology, Centro Hospitalar e Universitário de Lisboa Central , Lisbon, Portugal
                [2 ]Department of Ophthalmology, Hospital CUF Descobertas , Lisbon, Portugal
                [3 ]NOVA Medical School, Universidade NOVA de Lisboa , Lisbon, Portugal
                [4 ]Autoimmune Disease Unit, Unidade de Doenças Auto-imunes/serviço Medicina 3, Hospital de Santo António Dos Capuchos, Centro Hospitalar e Universitário de Lisboa Central , Lisbon, Portugal
                [5 ]Epidemiology and Statistics Unit, Research Center, Centro Hospitalar e Universitário de Lisboa Central , Lisbon, Portugal
                [6 ]CEAUL (Center of Statistics and Applications), Lisbon University , Lisbon, Portugal
                [7 ]Autoimmune Disease Unit, Unidade de Doenças Auto-imunes/serviço de Medicina 7.2, Hospital Curry Cabral, Centro Hospitalar e Universitário de Lisboa Central , Lisbon, Portugal
                [8 ]Instituto Gulbenkian de Ciência , Oeiras, Portugal
                [9 ]Department of Ophthalmology, Centro Hospitalar e Universitário de Coimbra , Coimbra, Portugal
                [10 ]Faculty of Medicine, University of Coimbra , Coimbra, Portugal
                Author notes
                Correspondence: Arnaldo Dias-SantosServiço de Oftalmologia, Hospital de Santo António dos Capuchos, Alameda de Santo António dos Capuchos , Lisboa1169-050, PortugalTel +351 21313 6492Email arnaldomiguelsantos@gmail.com
                Article
                219347
                10.2147/OPTH.S219347
                6708390
                © 2019 Dias-Santos et al.

                This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms ( https://www.dovepress.com/terms.php).

                Page count
                Figures: 3, Tables: 5, References: 53, Pages: 12
                Categories
                Original Research

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