scholarly journals Differences in Relationship Between Macular Inner Retinal Layer Thickness and Retinal Sensitivity in Eyes With Early and Progressed Glaucoma

2016 ◽  
Vol 57 (4) ◽  
pp. 1588 ◽  
Author(s):  
Makoto Araie ◽  
Hiroshi Murata ◽  
Aiko Iwase ◽  
Masanori Hangai ◽  
Kazuhisa Sugiyama ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Retinal Layer ◽  
Retinal Sensitivity

Relationship Between Macular Inner Retinal Layer Thickness and Corresponding Retinal Sensitivity in Normal Eyes

2014 ◽  
Vol 55 (11) ◽  
pp. 7199 ◽  
Author(s):  
Makoto Araie ◽  
Hitomi Saito ◽  
Atsuo Tomidokoro ◽  
Hiroshi Murata ◽  
Aiko Iwase
Keyword(s):  
Layer Thickness ◽  
Retinal Layer ◽  
Retinal Sensitivity

scholarly journals Comparison of Retinal Layer Thickness and Capillary Vessel Density in the Patients with Spontaneously Resolved Acute Central Serous Chorioretinopathy

2020 ◽  
Vol 10 (1) ◽  
pp. 45
Author(s):  
Kyu Jin Han ◽  
Hyeong Ju Kim ◽  
Je Moon Woo ◽  
Jung Kee Min
Keyword(s):  
Visual Acuity ◽  
Layer Thickness ◽  
Central Serous Chorioretinopathy ◽  
Subretinal Fluid ◽  
Vessel Density ◽  
Foveal Avascular Zone ◽  
Retinal Layer ◽  
Healthy Controls ◽  
Retrospective Case ◽  
Capillary Vessel

We investigate retinal layer thickness and capillary vessel density (VD) in the patients with central serous chorioretinopathy (CSC) who recovered spontaneously and evaluate the correlation between the changes in these values and visual outcomes using swept-source optical coherence tomography (SS-OCT) and OCT angiography (OCTA). This retrospective case–control study included 34 eyes of 34 patients with spontaneously resolved acute CSC. The changes in retinal layer thickness and capillary VD were examined using SS-OCT and OCTA after complete resolution of subretinal fluid (SRF). The fellow eyes and 34 healthy eyes were used as controls. In the eyes with CSC, the outer retinal layer was significantly thinner than in the eyes of fellow and healthy controls. The foveal avascular zone area and VDs in the superficial and deep capillary plexus in the eyes with CSC were not significantly different from those in the eyes of fellow and healthy controls. The VD of the choriocapillaris in the eyes with CSC was significantly lower than that in the eyes of fellow and healthy controls. Correlation analyses revealed that the outer retinal layer thickness and initial visual acuity were positively correlated with the final visual acuity. Furthermore, the initial SRF area and height were negatively correlated with the outer retinal layer thickness after SRF resolution. Attenuation of outer retinal layer thickness and decreased VD of the choriocapillaris were observed in the eyes with spontaneously resolved acute CSC. The outer retinal layer thickness could be an important visual predictor of CSC.

The effect of hemodialysis on individual retinal layer thickness

2021 ◽  
Author(s):  
Idit Maharshak ◽  
Idan Hecht ◽  
Lihi Mankuta ◽  
Asaf Achiron ◽  
Oriel Spierer ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Retinal Layer

scholarly journals Changes in retinal microvasculature and retinal layer thickness in association with apolipoprotein E genotype in Alzheimer’s disease

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Joo Youn Shin ◽  
Eun Young Choi ◽  
Min Kim ◽  
Hyung Keun Lee ◽  
Suk Ho Byeon
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Layer Thickness ◽  
Structural Changes ◽  
Foveal Avascular Zone ◽  
Retinal Layer ◽  
Inner Plexiform Layer ◽  
Apoe Ε4 ◽  
Retinal Microvasculature ◽  
Capillary Plexus

AbstractBiomarker tests of Alzheimer’s disease (AD) are invasive and expensive. Recent developments in optical coherence tomography (OCT) and OCT angiography (OCTA) have enabled noninvasive, cost-effective characterization of retinal layer vasculature and thickness. Using OCTA and OCT, we characterized retinal microvascular changes in the mild cognitive impairment (MCI) stage of AD and assessed their correlation with structural changes in each retinal neuronal layer. We also evaluated the effect of the APOE-ε4 genotype on retinal microvasculature and layer thickness. Retinal layer thickness did not differ between MCI patients (40 eyes) and controls (37 eyes, all p > 0.05). MCI patients had lower vessel density (VD) (p = 0.003) of the superficial capillary plexus (SCP) and larger foveal avascular zone area (p = 0.01) of the deep capillary plexus (DCP) than those of controls. VD of the SCP correlated with the ganglion cell layer (r = 0.358, p = 0.03) and inner plexiform layer thickness (r = 0.437, p = 0.007) in MCI patients. APOE-ε4-carrying MCI patients had a lower VD of the DCP than non-carriers (p = 0.03). In conclusion, retinal microvasculature was reduced in patients with AD-associated MCI, but retinal thickness was not changed; these changes might be affected by the APOE genotype. OCTA of the retinal microvasculature may be useful to detect vascular changes in AD.

scholarly journals Inner and outer retinal layer thickness alterations in pediatric and juvenile craniopharyngioma

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ga-In Lee ◽  
Kyung-Ah Park ◽  
Sei Yeul Oh ◽  
Doo-Sik Kong ◽  
Sang Duk Hong
Keyword(s):  
Layer Thickness ◽  
Outer Nuclear Layer ◽  
Plexiform Layer ◽  
Visual Field Defects ◽  
Retinal Layer ◽  
Inner Plexiform Layer ◽  
Healthy Controls ◽  
Fiber Layer ◽  
Photoreceptor Layer ◽  
Chiasmal Compression

AbstractWe evaluated postoperative retinal thickness in pediatric and juvenile craniopharyngioma (CP) patients with chiasmal compression using optical coherence tomography (OCT) auto-segmentation. We included 18 eyes of 18 pediatric or juvenile patients with CP and 20 healthy controls. Each thickness of the macular retinal nerve fiber layer (RNFL), ganglion cell layer (GCL), inner plexiform layer (IPL), inner nuclear layer, outer plexiform layer, outer nuclear layer, and photoreceptor layer was compared between the CP patients and healthy controls. There was significant thinning in the macular RNFL (estimates [μm], superior, − 10.68; inferior, − 7.24; nasal, − 14.22), all quadrants of GCL (superior, − 16.53; inferior, − 14.37; nasal, − 24.34; temporal, − 9.91) and IPL (superior, − 11.45; inferior, − 9.76; nasal, − 15.25; temporal, − 4.97) in pediatric and juvenile CP patients postoperatively compared to healthy control eyes after adjusting for age and refractive errors. Thickness reduction in the average and nasal quadrant of RNFL, GCL, and IPL was associated with peripapillary RNFL thickness, and reduced nasal quadrant GCL and IPL thicknesses were associated with postoperative visual field defects. In pediatric and juvenile patients with CP, decreased inner retinal layer thickness following chiasmal compression was observed. The changes in retinal structures were closely related to peripapillary RNFL thinning and functional outcomes.

scholarly journals Assessment of Global and Local Alterations in Retinal Layer Thickness in Ins2 (Akita) Diabetic Mice by Spectral Domain Optical Coherence Tomography

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Andrew W. Francis ◽  
Justin Wanek ◽  
Mahnaz Shahidi
Keyword(s):  
Optical Coherence Tomography ◽  
Mouse Model ◽  
Layer Thickness ◽  
Retinal Thickness ◽  
Normative Values ◽  
Retinal Layer ◽  
Wild Type ◽  
Global And Local ◽  
Akita Mice ◽  
Sd Oct

Purpose/Aim. The Ins2 (Akita) mouse is a spontaneous diabetic mouse model with a heterozygous mutation in the insulin 2 gene that results in sustained hyperglycemia. The purpose of the study was to assess global and local retinal layer thickness alterations in Akita mice by analysis of spectral domain optical coherence tomography (SD-OCT) images.Materials and Methods. SD-OCT imaging was performed in Akita and wild-type mice at 12 and 24 weeks of age. Inner retinal thickness (IRT), outer retinal thickness (ORT), total retinal thickness (TRT), and photoreceptor outer segment length (OSL) were measured. Mean global thickness values were compared between Akita and wild-type mice. Local thickness variations in Akita mice were assessed based on normative values in wild-type mice.Results. Akita mice had higher blood glucose levels and lower body weights (p<0.001). On average, IRT, ORT, and TRT were approximately 2% lower in Akita mice than in wild-type mice (p≤0.02). In Akita mice, the percent difference between retinal areas with thickness below and above normative values for IRT, ORT, and TRT was 22%, 32%, and 38%, respectively.Conclusions. These findings support the use of the Akita mouse model to study the retinal neurodegenerative effects of hyperglycemia.

scholarly journals Alterations in Retinal Layer Thickness and Reflectance at Different Stages of Diabetic Retinopathy by En Face Optical Coherence Tomography

2016 ◽  
Vol 57 (9) ◽  
pp. OCT341 ◽  
Author(s):  
Justin Wanek ◽  
Norman P. Blair ◽  
Felix Y. Chau ◽  
Jennifer I. Lim ◽  
Yannek I. Leiderman ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Diabetic Retinopathy ◽  
Layer Thickness ◽  
Retinal Layer ◽  
Optical Coherence ◽  
En Face

scholarly journals Association between individual retinal layer thickness and visual acuity in patients with epiretinal membrane: a pilot study

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9481
Author(s):  
Jing Zou ◽  
Wei Tan ◽  
Wenlong Huang ◽  
Kangcheng Liu ◽  
Fangling Li ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Layer Thickness ◽  
Epiretinal Membrane ◽  
Linear Regression Analysis ◽  
Plexiform Layer ◽  
Surgical Patients ◽  
Retinal Layer ◽  
Inner Plexiform Layer ◽  
Post Surgery ◽  
Visual Improvement

Purpose We investigated the correlation between visual acuity (VA) and individual retinal layer thickness in the foveal, parafoveal, and perifoveal regions of patients with an idiopathic epiretinal membrane (ERM). Methods One hundred and five subjects presenting with unilateral idiopathic ERM were included in this study. We segmented each patient’s optical coherence tomography (OCT) image into seven layers and calculated the mean layer thickness in the foveal, parafoveal, and perifoveal regions using the Iowa Reference Algorithm. In 105 patients with ERM, we detected correlations between their macular regions’ individual retinal layer thickness and their best corrected VA. Thirty-one of the 105 patients with ERM underwent vitrectomy and completed six months of follow-up. We then compared the 31 surgical patients’ preoperative and postoperative individual retinal layer thickness in each macular region. Additionally, the association between preoperative individual retinal layer thickness in each macular region and VA six months post-surgery in patients with ≥ two Snellen lines of visual improvement was determined. Results Multiple linear regression analysis showed that the inner nuclear layer (INL) thickness in the foveal, parafoveal, and perifoveal region were all associated with VA in the 105 patients (R2 = 0.344, P < 0.001; R2 = 0.427, P < 0.001; and R2 = 0.340, P < 0.001, respectively). Thirty-one surgical patients 6 months post-surgery showed significantly decreased thicknesses (P ≤ 0.012) of the foveal INL, inner plexiform layer (IPL), and outer nuclear layer (ONL); the parafoveal retina nerve fiber layer (RNFL), IPL, INL, and ONL; and the perifoveal RNFL, IPL, INL, ganglion cell layer (GCL), outer plexiform layer (OPL), and photoreceptor layer (PRL). We found a weak correlation between postoperative VA and preoperative foveal and perifoveal RNFL thickness (r = 0.404 and r = 0.359, respectively), and a moderate correlation between postoperative VA and preoperative foveal and parafoveal INL thickness (r = 0.529 and r = 0.583, respectively) in the 31 surgical patients (P ≤ 0.047). The preoperative INL thickness in the foveal, parafoveal, and perifoveal regions showed a moderate to strong correlation (r = 0.507, 0.644, and 0.548, respectively), with postoperative VA in patients with ≥ 2 lines of visual improvement (P ≤ 0.038). Conclusion We detected a correlation between retinal damage and VA in the parafoveal, perifoveal, and foveal regions. Our results suggest that INL thickness in all macular regions may be a prognostic factor for postoperative VA in ERM patients.

scholarly journals Association of Thiol–disulfide Homeostasis with Retinal Layer Thickness in Patients with Diabetes Mellitus

2021 ◽  
Author(s):  
Muhammet Cuneyt Bilginer ◽  
Abbas Ali Tam ◽  
Berna Evranos Ogmen ◽  
Bagdagul Yuksel Guler ◽  
Nagihan Ugurlu ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Diabetic Retinopathy ◽  
Layer Thickness ◽  
Disease Duration ◽  
Pigment Epithelium ◽  
Retinal Pigment ◽  
Control Group ◽  
Retinal Layer ◽  
Healthy Controls ◽  
Total Thiol

Abstract Background: This study aimed to investigate the relationship between early changes in retinal layer thickness and thiol–disulfide homeostasis in patients with type II diabetes mellitus (T2DM).Materials-Methods: There were 69 patients with T2DM (61 patients without retinopathy, 8 patients with retinopathy) and 21 healthy controls. In patients without retinopathy, 31 of the patients had a disease duration under 10 years, 30 of the patients had a disease duration over 10 years. Retinal layer thickness of the right eye was measured using Spectral Domain Optical Coherence Tomography. Results: Patients with T2DM and healthy controls had mean ages of 48.40 ± 8.25 years and 45.94 ± 7.32 years, respectively. The ganglion cell layer and retinal pigment epithelium thicknesses were significantly lesser in patients without diabetic retinopathy than those in the control group. In patients without diabetic retinopathy and with a disease duration of under 10 years, there was a negative correlation between the retinal nerve fiber layer thickness (µm) and disulphide/total thiol ratio, between the inner nuclear layer thickness (µm) and disulphide/native thiol ratio as well as disulphide/total thiol ratio (r= −0.376, p= 0.037; r= −0.356, p= 0.050; r= −0.380, p= 0.035, respectively) and positive correlation between the INL thickness (µm) and native thiol/total thiol ratio (r= 0.359, p= 0.047).Conclusion: Early changes in retinal layers in patients with DM were associated with thiol–disulfide homeostasis. Administration of therapeutic supplements may aid in the management of low thiol concentrations; this increases the importance of the study findings.

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