Postoperative Choroidal Vascular Biomarkers in Eyes with Rhegmatogenous Retinal Detachment-Related Giant Retinal Tears

Quiroz-Gonzalez, Erick A.; Quiroz-Gonzalez, Miguel A.; Lima-Gómez, Virgilio

doi:10.1186/s40942-023-00482-9

Cited by 3 publications

(1 citation statement)

References 55 publications

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“…Quiroz-Reyes et al have shown how critical CVI and CFA are used to evaluate perfusion in different pathologies, such as GRT-related RRD postoperative evaluation, and surgically resolved MTM eyes, which generally exhibit larger superficial postoperative FAZs, smaller CFAs, lower VDs, more structural macular defects, and thinner CSFTs [35,68]. Better functional, structural, and perfusion index outcomes were observed in highly myopic eyes that underwent early surgery.…”

Section: Literature Review and Discussionmentioning

confidence: 99%

Postoperative Evaluation of Retinal and Choroidal Perfusion in Diabetic Tractional Retinal Detachment

A. Quiroz-Reyes,

A. Quiroz-Gonzalez,

A. Quiroz-Gonzalez

2024

Diabetic Retinopathy - Advancement in Understanding the Pathophysiology and Management Strategies

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Optical coherence tomography angiography (OCT-A) is useful for quantitative analyses of different choroidal and retinal vascular plexuses. Highlighting postoperative choroidal and retinal perfusion outcomes in patients who have undergone successful tractional retinal detachment (TRD) repair is crucial for understanding the impact of this condition on postoperative visual acuity. This chapter describes postoperative perfusion outcomes, such as vessel density (VD) quantified in the superficial and deep capillary plexuses of the retina and choroidal perfusion markers, such as the choroidal vascularity index (CVI) and choriocapillaris flow area (CFA). In this analysis, superficial and deep capillary plexuses were quantified, and the CVI and CFA were significantly lower in the surgical group (P = 0.0011), with median CVIs of 57.95% and 2.28 mm2 in the control group and 44.41% and 1.38 mm2 in the surgical group, respectively. Definitive correlations were shown between alterations in the structure of the retina and choroid after surgery and visual dysfunction in diabetic individuals. The CVI and CFA can be used as quantitative measures to evaluate choroidal damage in postoperative patients with traction retinal detachment. The CVI serves as a dependable quantitative biomarker for evaluating the progression of diabetic retinopathy (DR) or for tracking postoperative eyes.

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Section: Literature Review and Discussionmentioning

confidence: 99%

Postoperative Evaluation of Retinal and Choroidal Perfusion in Diabetic Tractional Retinal Detachment

A. Quiroz-Reyes,

A. Quiroz-Gonzalez,

A. Quiroz-Gonzalez

2024

Diabetic Retinopathy - Advancement in Understanding the Pathophysiology and Management Strategies

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Comparison of Vessel Density and Retinal Sensitivity After Scleral Buckling and Phacovitrectomy in the Management of Macula-on Primary Rhegmatogenous Retinal Detachment

Zabel,

Charytoniuk,

Zabel

et al. 2024

OPTH

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Purpose The choice of surgical method for rhegmatogenous retinal detachment (RRD) may have a significant impact on the retina. In this study, we aimed to compare retinal function and structure after scleral buckling (SB) and phacovitrectomy (phaco-PPV) for macula-on RRD. Patients and Methods This cross-sectional study included patients who underwent anatomically successful repair of macula-on RRD managed with SB (n=35) and phaco-PPV (n=35) between 2019–2023. All participants were examined within 6–20 months of surgery to evaluate the retinal structure using spectral domain optical coherence tomography (SD-OCT) and vessel density (VD) by OCT angiography (OCTA). Best-corrected visual acuity (BCVA) and microperimetry (MP) tests were used to assess the retinal function. Results Analysis of the microvascular network with OCTA between eyes after surgery and healthy eyes showed a decrease in VD. Significant changes in the superficial vascular plexus (SVP) and deep vascular plexus (DVP) were observed only in eyes after SB surgery (p <0.001 and p=0.02, respectively). Analysis of retinal function assessed by MP showed a significant decrease (p<0.05) in retinal sensitivity after phaco-PPV (24.81±2.25 dB) and SB (24.18±2.14 dB) operations compared to the healthy control group (25.97 ± 1.51 dB), whereas postoperative BCVA showed no differences (p>0.05). Conclusion Changes in retinal sensitivity were accompanied by impairment of the microvascular network in the eyes after SB and phaco-PPV surgeries due to macula-on RRD. Disorders were more pronounced in eyes following SB surgery, possibly secondary to mechanical stress.

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Comparison of the effects of different local thresholding techniques on noise: A potential for optical coherence tomography image binarization

İNAM

2023

Frontiers in Life Sciences and Related Technologies

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This study aims to investigate the different local thresholding methods on various regions of noise images, which could be used for image binarization of optical coherence tomography images. In the methods one hundred 8-bit images of noise, 1000x1000 pixel in size, is generated using ImageJ/FIJI program. Images processed with four different auto local threshold method in ImageJ/FIJI program as Niblack, mean, median and midgrey, in order to perform binarization. Twenty-five different region of interest, 100x100 pixel in size, from different region in an image analyzed for area percentage (AP) measurement. Normality tests were performed via Saphiro Wilk Normality test, and Student’s t test and one-way ANOVA were used to assess the continuous variables, and Bonferroni test for post hoc analysis, utilizing the IBM SPSS Statistics, Version 28.0 for the statistical analysis. In the results of this study mean AP for Niblack method was 42.08 ± 0.32%, for mean method was 50.00 ± 0.32%, for median method was 49.28 ± 0.16%, and for midgrey method was 49.63 ± 2.09%. One-way ANOVA analysis shows all of the different subgroups of Niblack and mean, Niblack and median, Niblack and midgrey, mean and median, mean and midgrey, and median and midgrey measurements are significantly different from each other (p < 0.001 for all of the subgroup post hoc analysis). In conclusion our study examined 100 noise images across 25 regions using four auto local threshold methods (Niblack, mean, median, and midgrey). Analyses indicated that Niblack having the lowest mean and there is significant difference between all of the methods; researchers using auto local threshold methods in OCT image processing should select methods aligned with data properties, warranting further exploration of these methods' impact on diverse OCT image, esspecially taking into account the effect of the noise.

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Postoperative Choroidal Vascular Biomarkers in Eyes with Rhegmatogenous Retinal Detachment-Related Giant Retinal Tears

Cited by 3 publications

References 55 publications

Postoperative Evaluation of Retinal and Choroidal Perfusion in Diabetic Tractional Retinal Detachment

Postoperative Evaluation of Retinal and Choroidal Perfusion in Diabetic Tractional Retinal Detachment

Comparison of Vessel Density and Retinal Sensitivity After Scleral Buckling and Phacovitrectomy in the Management of Macula-on Primary Rhegmatogenous Retinal Detachment

Comparison of the effects of different local thresholding techniques on noise: A potential for optical coherence tomography image binarization

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