Multifocal electroretinogram in diabetic macular edema; Correlation with visual acuity and optical coherence tomography

Introduction: Diabetic Macular Edema (DME) is an important cause of vision loss in diabetic retinopathy. Optical Coherence Tomography (OCT) is a non-invasive modality that produces high-resolution images of retinal layers. Objective: To evaluate the prevalence of DME patterns and their association with risk factors and visual acuity. Materials and Methods: In this cross-sectional study, type 2 diabetics with macular edema referred to our center during a ten-month period underwent OCT. Patients with macular edema due to causes other than diabetes and with OCT images of improper quality were excluded from the study. Four distinct patterns were found in the OCT images. A questionnaire including age, sex, duration of diabetes, serum TG and cholesterol, HbA1c, BMI and visual acuity, as well as the findings of OCT images were filled for the subjects. Results: Eighty-six eyes from 46 patients were evaluated. The most and the least common patterns were sponge-like retinal swelling (SLRS) and posterior hyaloidal traction (PHT) found in 64.0% and 5.8% of the subjects, respectively. A sub-retinal fluid pattern was more common in males (p=0.011) and in patients with serum TG > 200mg/dl (p=0.037). There were significant associations between central foveal (r=0.45, p<0.001), nasal (r=0.35, p=0.001) and temporal (r=0.32, p=0.003) thicknesses with visual acuity. Moreover, the highest thickness (462.4±119.2μm) and also the worst visual acuity (1.0±0.5logMAR) pertained to the cystoid macular edema (CME) pattern. Conclusion: Our study showed that the most common OCT pattern of DME is the sponge-like retinal swelling, while posterior hyaloidal traction has the lowest prevalence. A higher foveal thickness and a lower visual acuity are seen in the CME pattern. Nepal J Ophthalmol 2013; 5(10): 190-194 DOI: http://dx.doi.org/10.3126/nepjoph.v5i2.8727

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Relationship between Optical Coherence Tomography Retinal Parameters and Visual Acuity in Diabetic Macular Edema

Ophthalmology ◽

10.1016/j.ophtha.2010.03.051 ◽

2010 ◽

Vol 117 (12) ◽

pp. 2379-2386 ◽

Cited By ~ 71

Author(s):

Tarek Alasil ◽

Pearse A. Keane ◽

Jared F. Updike ◽

Laurie Dustin ◽

Yanling Ouyang ◽

...

Keyword(s):

Optical Coherence Tomography ◽

Visual Acuity ◽

Macular Edema ◽

Diabetic Macular Edema ◽

Optical Coherence

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Relationship between Optical Coherence Tomography–Measured Central Retinal Thickness and Visual Acuity in Diabetic Macular Edema

Yearbook of Ophthalmology ◽

10.1016/s0084-392x(08)79095-6 ◽

2008 ◽

Vol 2008 ◽

pp. 148-149

Author(s):

J.F. Vander

Keyword(s):

Optical Coherence Tomography ◽

Visual Acuity ◽

Macular Edema ◽

Diabetic Macular Edema ◽

Retinal Thickness ◽

Central Retinal Thickness ◽

Optical Coherence

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Evaluation of vessel density in disorganization of retinal inner layers after resolved diabetic macular edema using optical coherence tomography angiography

PLoS ONE ◽

10.1371/journal.pone.0244789 ◽

2021 ◽

Vol 16 (1) ◽

pp. e0244789

Author(s):

Gilda Cennamo ◽

Daniela Montorio ◽

Federica Fossataro ◽

Claudia Fossataro ◽

Fausto Tranfa

Keyword(s):

Optical Coherence Tomography ◽

Visual Acuity ◽

Macular Edema ◽

Diabetic Macular Edema ◽

Negative Correlation ◽

Optical Coherence Tomography Angiography ◽

Significant Negative Correlation ◽

Vessel Density ◽

Optical Coherence ◽

Capillary Plexus

Purpose To evaluate the retinal vessel density (VD) in the macular region and the foveal avascular zone (FAZ) area using optical coherence tomography angiography (OCTA) in patients with and without disorganization of retinal inner layers (DRILs) after resolution of diabetic macular edema. Methods Thirty-seven eyes of 37 DRIL patients (mean age 63 ± 13.97 years), 30 eyes of 30 no DRIL patients and 35 eyes of 35 controls were enrolled in this study. We evaluated the VD in the macular region of superficial capillary plexus (SCP), deep capillary plexus (DCP) and FAZ area. Results DRIL and no DRIL groups showed decreased VD in SCP and DCP (p<0.05) and a larger FAZ area (p<0.001) compared to controls. However, DRIL patients revealed a statistically significant reduction in VD of SCP (p = 0.041) and a greater FAZ area (p<0.001) with respect to no DRIL patients. We found a significant negative correlation between the VD of the foveal SCP (r = -0.414, p = 0.011), foveal DCP (r = -0.358, p = 0.025) and best corrected visual acuity (BCVA) in DRIL group. Moreover there was a significant positive correlation between the FAZ area (r = 0.425, p = 0.034) and BCVA. Therefore, in presence of DRILs lower VD values of SCP and DCP and a larger FAZ area correlated with a worse visual acuity. In no DRILs group, there was a significant negative correlation between the VD of the foveal DCP and BCVA. Conclusion OCTA highlights the role of retinal vascular ischemia in the pathogenesis of DRILs. This parameter could represent an important functional predictive factor in diabetic patients.

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Features of pathological changes in the retina and vitreoretinal interface in the macular zone in patients with diabetic macular edema

Acta biomedica scientifica ◽

10.29413/abs.2021-6.6-1.16 ◽

2021 ◽

Vol 6 (6-1) ◽

pp. 136-143

Author(s):

E. V. Boiko ◽

D. Kh. Oskanov ◽

S. V. Sosnovskii

Keyword(s):

Optical Coherence Tomography ◽

Visual Acuity ◽

Macular Edema ◽

Diabetic Macular Edema ◽

Morphometric Parameters ◽

Ophthalmological Examination ◽

Optical Coherence ◽

Pathological Changes ◽

Vitreoretinal Interface ◽

Corrected Visual Acuity

Background. Diabetic macular edema (DME) is one of the main causes of decreased central vision. Determining the reasons for the refractoriness of DME to treatment is an urgent problem.Aims. Based on the analysis of optical coherence tomography, to study the features of pathological changes in the retina and vitreoretinal interface (VRI) in the macular zone in patients with DME.Materials and methods. We studied 587 patients (587 eyes) with diffuse DME in the setting of nonproliferative diabetic retinopathy. In addition to the standard ophthalmological examination, everyone underwent optical coherence tomography of the macular zone with an assessment of structural changes in the retina, morphometric parameters, and the state of the VRI.Results. In 351 patients (59.80 %) with DME, pathological variants of the VRI were revealed, in which the best corrected visual acuity was significantly lower, and the morphometric parameters (retinal thickness and macular volume) were signifi cantly higher. Analysis of morphostructural changes in the macular zone revealed that in pathological VRI, neuroepithelial detachment and high edema are more common, and cystic edema is larger in area compared to the group with a normal VRI. With detachment of neuroepithelium against the background of a pathological VRI, the worst morphometric data are determined, with solid exudates in the macula, the worst indices of visual loss are determined.Conclusions. The pathological VRI in patients with diabetic macular edema occurs in more than half of the cases and is characterized by a high incidence of neuroepithelial detachment, high edema, higher morphometric parameters with worse visual acuity. At the same time, the presence of neuroepithelial detachment corresponds to the worst morphometric indicators of the macular zone, and the presence of solid exudates corresponds to a lower maximum corrected visual acuity. Further research is needed to assess the effect of the listed morphostructural and morphometric changes in combination with various pathological variants of VRI on the effectiveness of DME treatment.

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