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      Evaluation of the acute effect of haemodialysis on retina and optic nerve with optical coherence tomography

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          Abstract

          Purpose

          The primary objective of haemodialysis (HD) was to correct the composition and volume of body fluids. The aim of this study was to evaluate the acute effect of HD on mean arterial pressure changes and on retina and optic nerve with optical coherence tomography (OCT).

          Methods

          Fifty-three eyes of 28 patients were enrolled in this study. The patients’ retinal and RNFL thicknesses were measured by OCT and mean arterial pressure alterations were recorded before and immediately after HD session.

          Results

          The results show that while there was a reduction at central foveal thickness and ganglion cell layer thickness, central subfield and RNFL thickness were increased with HD session. But none of them were statistically significant ( p = 0.320, p = 0.792, p = 0.744, p = 0.390). The mean arterial pressure of the patients decreased significantly ( p < 0.05) but it was not correlated with retinal and RNFL values.

          Conclusion

          The changes in retinal and RNFL findings were not significant. But these alterations may effect the long term follow-up of the patients with retinal and optic nerve disease. Therefore it is important to pay attention HD session time for these patients’ measurements.

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          Most cited references23

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          Nocturnal systemic hypotension increases the risk of glaucoma progression.

          The objective of this prospective, longitudinal study of patients with normal-tension glaucoma (NTG) was to determine whether patients with nocturnal hypotension are at greater risk for visual field (VF) loss over 12 months than those without nocturnal hypotension.
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            Glaucoma discrimination of segmented cirrus spectral domain optical coherence tomography (SD-OCT) macular scans.

            To evaluate the glaucoma discriminating ability of macular retinal layers as measured by spectral domain optical coherence tomography (SD-OCT). Healthy, glaucoma suspect and glaucomatous subjects had a comprehensive ocular examination, visual field testing and SD-OCT imaging (Cirrus HD-OCT; Carl Zeiss Meditec, Dublin, California, USA) in the macular and optic nerve head regions. OCT macular scans were segmented into macular nerve fibre layer (mNFL), ganglion cell layer with inner plexiform layer (GCIP), ganglion cell complex (GCC) (composed of mNFL and GCIP), outer retinal complex and total retina. Glaucoma discriminating ability was assessed using the area under the receiver operator characteristic curve (AUC) for all macular parameters and mean circumpapillary retinal nerve fibre layer (cpRNFL). Analysis was performed on 51 healthy, 49 glaucoma suspect and 63 glaucomatous eyes. The median visual field MD was -2.21 dB (IQR: -6.92 to -0.35) for the glaucoma group, -0.32 dB (IQR: -1.22 to 0.73) for the suspect group and -0.18 dB (IQR: -0.92 to 0.71) for the healthy group. Highest age adjusted AUCs were found for average GCC and GCIP (AUC=0.901 and 0.900, respectively) and their sectoral measurements: infero-temporal (0.922 and 0.913), inferior (0.904 and 0.912) and supero-temporal (0.910 and 0.897). These values were similar to the discriminating ability of the mean cpRNFL (AUC=0.913). Comparison of these AUCs did not yield any statistically significant difference (all p>0.05). SD-OCT GCIP and GCC measurements showed similar glaucoma diagnostic ability and were comparable with that of cpRNFL.
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              Relationship between visual field sensitivity and macular ganglion cell complex thickness as measured by spectral-domain optical coherence tomography.

              To evaluate the strength and pattern of the relationship between visual field (VF) mean sensitivity (MS), assessed by standard automated perimetry (SAP), and macular ganglion cell complex thickness (GCCT), measured with spectral-domain optical coherence tomography (SD-OCT). Ninety-seven glaucoma patients were enrolled. GCCT, determined by ganglion cell complex (GCC) scanning, and two peripapillary retinal nerve fiber layer thickness (pRNFLT) measurements, using the NHM4 (RNFL1) and RNFL 3.45 (RNFL2) modes, were recorded. MS was recorded on the decibel (dB) and 1/L scales. The relationship between function (MS) and structure (GCC, pRNFLT) was sought. The association of MS (in decibels) with GCC global (r = 0.445) and sectoral (superior, r = 0.528; inferior, r = 0.370) thicknesses was not significantly different from that of MS to global (RNFL1, r = 0.505; RNFL2, r = 0.498) and sectoral (RNFL 1 superior, r = 0.559; inferior, r = 0.440; RNFL 2 superior, r = 0.535; inferior, r = 0.443) pRNFLT, on linear regression analysis. The relationship pattern was curvilinear on the dB scale against GCCT and RNFLT. Logarithmic regression of MS (using both the dB and 1/L scales) against GCCT and RNFLT was better than linear regression in describing the pattern of association. GCCT, determined by SD-OCT, showed correlation to MS of a strength similar to that demonstrated between MS and pRNFLT.
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                Author and article information

                Contributors
                Journal
                Saudi J Ophthalmol
                Saudi J Ophthalmol
                Saudi Journal of Ophthalmology
                Elsevier
                1319-4534
                08 November 2016
                Oct-Dec 2016
                08 November 2016
                : 30
                : 4
                : 233-235
                Affiliations
                [a ]Department of Ophthalmology, Başkent University Zübeyde Hanım Research Hospital, İzmir, Turkey
                [b ]Department of Neurology, Başkent University Zübeyde Hanım Research Hospital, İzmir, Turkey
                [c ]Department of Ophthalmology, Kastamonu Dr. Münif İslamoğlu State Hospital, Kastamonu, Turkey
                [d ]Department of Internal Medicine, Başkent University Zübeyde Hanım Research Hospital, İzmir, Turkey
                Author notes
                [* ]Corresponding author at: Kastamonu Dr. Münif İslamoğlu Devlet Hastanesi, Göz Hastaliklari, Kastamonu 37000, Turkey.Kastamonu Dr. Münif İslamoğlu Devlet HastanesiGöz HastaliklariKastamonu37000Turkey drmoguz@ 123456gmail.com
                Article
                S1319-4534(16)30065-0
                10.1016/j.sjopt.2016.10.007
                5161809
                28003781
                f555cae7-d2db-41ac-a4d3-cd2e88a11cf4
                © 2016 The Authors. Production and hosting by Elsevier B.V. on behalf of Saudi Ophthalmological Society, King Saud University.

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                : 8 June 2015
                : 31 October 2016
                Categories
                Original Article

                haemodialysis,optical coherence tomography,retinal thickness,rnfl thickness

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