Optical Coherence Tomography and Pattern Electroretinography Changes in Egyptian Patients with Major Depressive Disorder

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Mostafa S ElShaarawi ◽  
Ayman A Gaafar ◽  
Hisham S. Saad Eldin ◽  
Randa H Ali
Keyword(s):  
Optical Coherence Tomography ◽  
Major Depressive Disorder ◽  
Depressive Disorder ◽  
Control Group ◽  
Ophthalmological Examination ◽  
Optical Coherence ◽  
Fiber Layer ◽  
Major Depressive ◽  
Cross Sectional ◽  
Pattern Electroretinography

Abstract Background Major depressive disorder (MDD) is a common psychiatric disorder that affects nearly 11.1-14.6 % of the population in their lifetime. Pathophysiology and brain imaging findings show that degenerative and inflammatory processes may play a role. Meta-analysis of voxel-based morphometry studies in MDD demonstrated significant gray matter loss. From anatomical and embryological perspectives, the retina can be considered a unique extension of the brain and is able to reflect axonal histopathology. Being unmyelinated, it can provide insight into the pathophysiological processes of diseases with a neurodegenerative element. Aim to compare retinal optical coherence tomography (OCT) parameters in a group of MDD patients with a healthy control group and to correlate OCT parameters with pattern electroretinography (PERG) parameters. Method a controlled cross sectional study was conducted on 30 MDD patients and 28 age and sex matched controls. Both groups had a full ophthalmological examination, OCT imaging and 7 patients and 11 controls have PERG recorded. Results Thinning of the superior retinal nerve fiber layer, thinning of most of the ganglion cell inner plexiform (GCIP) layer, thinning of most of the macular thickness and thinning of macular volume in both eyes were detected. There was a statistically significant positive correlation between the left GCIP layer and the amplitude of the N95 wave. Also a statistically significant negative correlation existed between MDD duration in years with the left eye's average volume of the outer ring of the macula. Conclusion Significant retinal changes were detected by OCT in MDD patients supporting the theory of neurodegeneration as a pathophysiology of MDD.

Retinal changes in patients with major depressive disorder – A controlled optical coherence tomography study

2018 ◽  
Vol 227 ◽  
pp. 665-671 ◽  
Author(s):  
Carlos Schönfeldt-Lecuona ◽  
Arno Schmidt ◽  
Thomas Kregel ◽  
Jan Kassubek ◽  
Jens Dreyhaupt ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Major Depressive Disorder ◽  
Depressive Disorder ◽  
Optical Coherence ◽  
Major Depressive

scholarly journals Optic nerve and macular optical coherence tomography in recovered COVID-19 patients

2021 ◽  
pp. 112067212110010
Author(s):  
Barbara Burgos-Blasco ◽  
Noemi Güemes-Villahoz ◽  
Beatriz Vidal-Villegas ◽  
Jose Maria Martinez-de-la-Casa ◽  
Juan Donate-Lopez ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optic Nerve ◽  
Demographic Data ◽  
Mean Difference ◽  
Control Group ◽  
Case Group ◽  
Inner Plexiform Layer ◽  
Ophthalmological Examination ◽  
Optical Coherence ◽  
Fiber Layer

Purpose: To investigate the peripapillary retinal nerve fiber layer thickness (RNFLT), macular RNFLT, ganglion cell layer (GCL), and inner plexiform layer (IPL) thickness in recovered COVID-19 patients compared to controls. Methods: Patients previously diagnosed with COVID-19 were included, while healthy patients formed the historic control group. All patients underwent an ophthalmological examination, including macular and optic nerve optical coherence tomography. In the case group, socio-demographic data, medical history, and neurological symptoms were collected. Results: One hundred sixty patients were included; 90 recovered COVID-19 patients and 70 controls. COVID-19 patients presented increases in global RNFLT (mean difference 4.3; CI95% 0.8 to 7.7), nasal superior (mean difference 6.9; CI95% 0.4 to 13.4), and nasal inferior (mean difference 10.2; CI95% 2.4 to 18.1) sectors of peripapillary RNFLT. Macular RNFL showed decreases in COVID-19 patients in volume (mean difference −0.05; CI95% −0.08 to −0.02), superior inner (mean difference −1.4; CI95% −2.5 to −0.4), nasal inner (mean difference −1.1; CI95% −1.8 to −0.3), and nasal outer (mean difference −4.7; CI95% −7.0 to −2.4) quadrants. COVID-19 patients presented increased GCL thickness in volume (mean difference 0.04; CI95% 0.01 to 0.07), superior outer (mean difference 2.1; CI95% 0.8 to 3.3), nasal outer (mean difference 2.5; CI95% 1.1 to 4.0), and inferior outer (mean difference1.2; CI95% 0.1 to 2.4) quadrants. COVID-19 patients with anosmia and ageusia presented an increase in peripapillary RNFLT and macular GCL compared to patients without these symptoms. Conclusions: SARS-CoV-2 may affect the optic nerve and cause changes in the retinal layers once the infection has resolved.

Response letter: Retinal changes in patients with major depressive disorder - a controlled optical coherence tomography study

2018 ◽  
Vol 239 ◽  
pp. 123 ◽  
Author(s):  
Carlos Schönfeldt-Lecuona ◽  
Arno Schmidt ◽  
Thomas Kregel ◽  
Jan Kassubek ◽  
Jens Dreyhaupt ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Major Depressive Disorder ◽  
Depressive Disorder ◽  
Optical Coherence ◽  
Major Depressive

COMPARISON OF RETINAL NERVE FIBER LAYER THICKNESS(RNFL) IN NORMAL AND GLAUCOMA PATIENTS WITH OPTICAL COHERENCE TOMOGRAPHY(OCT)

2021 ◽  
pp. 7-8
Author(s):  
Nirav Mehta ◽  
Nayana Dhorajiya ◽  
Rupam Desai
Keyword(s):  
Optical Coherence Tomography ◽  
Layer Thickness ◽  
Open Angle Glaucoma ◽  
Control Group ◽  
Optical Coherence ◽  
Fiber Layer ◽  
Cross Sectional ◽  
Glaucoma Suspect ◽  
Rnfl Thickness ◽  
Glaucoma Group

Optical coherence tomography (OCT) has proved to be valuable in the detection of glaucomatous damage. With its high resolution and proven measurement reproducibility, OCT has the potential to become an important tool for glaucoma detection. This manuscript presents the capabilities of the OCT technology evaluate retinal nerve ber layer thickness in normal and glaucoma patients Method: -A prospective, non-randomized, observational cross-sectional study was done at Rotary eye hospital, Navsari, from September 2019 to March 2020. Groups were divided in Control and glaucoma group and further Glaucoma patients were also subdivided in to Glaucoma Suspect, OHT, NTG and POAG. Patient went under comprehensive examination and selected patient went undergone measuring average retinal nerve ber layer thickness (RNFL) was by using ZEISS CIRRUS HD OCT. Results: - In overall 120 eyes of patients, 60 eyes of control group & 60 eyes of glaucoma groups were analysed. The average RNFL measurement were signicantly thinner in glaucoma group with compared control groups were 80±14 and 89±12, (P<0.01). All four quadrant RNFL thickness were analysed in Glaucoma Suspect, OHT, NTG and POAG which was statistically highly signicant. Superior quadrant RNFL thickness among groups were 105±17, 112±16, 90±17 and 85±18 m respectively (p= < 0.01).Mean RNFL thickness showed a decrease in thickness from Non-Glaucoma to Primary Open angle glaucoma (POAG) shows statistically signicant difference. Conclusions: OCT is important instrument for measuring RNFL thickness. Study shows difference in normal and glaucoma patients and different types of glaucoma patients. OCT measurement will help in early detection of glaucoma as well as in keeping an eye on progression of glaucoma.

scholarly journals Retinal Never Fiber Layer Thickness In Chronic Renal Failure: Analysis By Optical Coherence Tomography

10.3823/2557 ◽  
2018 ◽  
Vol 11 ◽  
Author(s):  
Diego Nery Benevides Gadelha ◽  
Neylane Coelho Gadelha ◽  
Orlando Vieira ◽  
Silvio De Biase Campos ◽  
Carlos Brandt
Keyword(s):  
Optical Coherence Tomography ◽  
Nerve Fiber ◽  
Layer Thickness ◽  
Group Differences ◽  
Control Group ◽  
Glaucomatous Optic Neuropathy ◽  
Optical Coherence ◽  
Fiber Layer ◽  
Cross Sectional ◽  
Retinal Nerve Fiber

Purpose: To analyze the retinal nerve fiber layer thickness (RNFL) in CKD patients by means of optical coherence tomography, ascertaining mean overall RNFL and mean RNFL in the nasal, temporal, superior, and inferior quadrants and comparing these measurements to those obtained from a control group. Methods: This was a prospective, analytical, cross-sectional case-control study. The study sample comprised 22 eyes from 11 patients and 33 eyes from 17 patients in the case and control groups respectively. RNFLT was measured with a model 3000 OCT unit (Stratus OCT-3â„¢, Carl Zeiss Meditec Inc., Dublin, CA). The fast RNFL protocol was used, which consists of three consecutive 3.4-mm-diameter circular scans centered on the optic nerve. Measured parameters included overall mean RNFL and mean RNFL at the temporal (316–45°), superior (46–135°), nasal (136–225°), and inferior (226–315°) quadrants. The Mann-Whitney U was employed to assess possible between-group differences in mean overall RNFL and RNFL at the superior, temporal, nasal, and inferior quadrants. The null hypothesis was rejected when p-values were smaller than the set significance level of <0.05. Results: Mean RNFL overall and at the superior, nasal, and inferior quadrants was greater in the control group, and that no significant between-group differences were detected in RNFL at the temporal quadrant. Conclusion: Mean retinal nerve fiber thickness was significantly lower in the group of patients with CRF than in the control group. Ischemia resulting from uremia may explain the overestimation of cases of glaucomatous optic neuropathy.   Keywords: Chronic Kidney Failure, Uremia, Optical Coherence Tomography, Retina  

scholarly journals Preventive Effect of Liothyronine on Electroconvulsive Therapy-Induced Memory Deficit in Patients with Major Depressive Disorder: A Double-Blind Controlled Clinical Trial

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Arash Mohagheghi ◽  
Asghar Arfaie ◽  
Shahrokh Amiri ◽  
Masoud Nouri ◽  
Salman Abdi ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Major Depressive Disorder ◽  
Depressive Disorder ◽  
Electroconvulsive Therapy ◽  
Visual Memory ◽  
Memory Deficit ◽  
Control Group ◽  
Major Depressive ◽  
Double Blind ◽  
The Impact

Introduction and Objective. Despite the effectiveness of electroconvulsive therapy (ECT) in treating major depressive disorder (MDD), its cognitive side effects make it less popular. This study investigated the impact of liothyronine on ECT-induced memory deficit in patients with MDD.Methodology. This is a double-blind clinical trial, in which 60 patients with MDD who were referred for ECT were selected. The diagnosis was based on the criteria of DSM-IV-TR. Patients were divided randomly into two groups to receive either liothyronine (50 mcg every morning) or placebo. After the assessment with Wechsler Memory Scale-Revised (WMS-R) before first session of ECT, posttests were repeated again, two months after the completion of ECT.Findings. By controlling the pretest scores, the mean scores of the experimental group were higher than the control group in delayed recall, verbal memory, visual memory, general memory, and attention/concentration scales (P<0.05).Conclusion. Liothyronine may prevent ECT-induced memory impairment in patients with MDD. This study has been registered in IRCT underIRCT201401122660N2.

scholarly journals Glaucomatous Macular Vasculature: A Quantitative Analysis

2020 ◽  
Vol 9 (3) ◽  
pp. 185-197
Author(s):  
Pedro Arede ◽  
Joanna Przezdziecka-Dolyk ◽  
Fabian Debowy ◽  
Jacek Olszewski ◽  
Carla Fernandes ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Structural Changes ◽  
Open Angle Glaucoma ◽  
Major Axis ◽  
Foveal Avascular Zone ◽  
Control Group ◽  
Equivalent Diameter ◽  
Optical Coherence ◽  
Fiber Layer ◽  
Avascular Zone

Background: The aim of this study was to evaluate the characteristics of the macular vessel density (VD) and the foveal avascular zone (FAZ) in glaucoma quantitatively using the optical coherence tomography angiography (OCT-A). Methods: Twenty-five eyes of 13 patients with primary open angle glaucoma (POAG) and 12 eyes of 6 healthy participants were enrolled retrospectively. Functional visual field (VF) and structural Spectral-Domain optical coherence tomography (SD-OCT) Retinal Nerve Fiber Layer Thickness (RNFLT) were assessed in all participants. OCT-A was performed on a fovea centered, 15x10 degrees, macular region. OCT-A scans were processed with MATLAB software and automatically graded to define FAZ parameters. The parafoveal VD in the superficial and deep retinal vascular plexus (SVP and DVP) was analyzed by quadrant and circular segmented zones. Results: Foveal Avascular Zone -Major Axis Length (p=0.02), Area (p=0.04), Equivalent Diameter (p=0.04) and Perimeter (p=0.04) were significantly larger in glaucoma than the control group. Regarding SVP and DVP, the average macular total VD were lower in glaucoma patients compared to the control group (p<0.01; p<0.01). Additionally, the inner circular region (p=0.04; p<0.01 respectively for SVP and DVP) and all quadrants except for North had a lower VD in glaucoma group compared to the control group. Assessment of the total VD successfully predicted RNFLT (p<0.001) and was significantly associated with the probability of glaucoma (p=0.009). Conclusion: OCT-A parameters, namely the FAZ morphology and the macular VD, were associated with glaucomatous functional and structural changes. The macular VD showed a considerable diagnostic value. It may be a modern biomarker, representing microvascular network disruption of the macular perfusion in glaucoma.

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