386 results match your criteria npdr groups

Macular Vascular Density Analysis Using Adobe Photoshop Software In Diabetic Eyes: Optical Coherence Tomography Angiography Study.

J Ayub Med Coll Abbottabad 2021 Jul-Sep;33(3):441-446

Department of Biotechnology and Genetic Engineering, University of Agriculture, Peshawar, Pakistan.

Background: Optical Coherence Tomography Angiography (OCTA) is dye less microvascular visualizing technique. In study we binaries OCTA images of macular vessels in healthy and diabetic subjects without macular oedema using Adobe Photoshop CS3 extended version.

Methods: Prospective, single centered, observational study total of 58 eyes of 108 Diabetic Retinopathy (DR) subjects and 20 eyes of 40 normal subjects with mean age of 58. Read More

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September 2021

Alterations in choroidal vascular parameters following panretinal photocoagulation using enhanced-depth imaging optical coherence tomography in diabetic retinopathy.

Graefes Arch Clin Exp Ophthalmol 2021 Sep 1. Epub 2021 Sep 1.

Retina Service, Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Qazvin square, South Karegar Street, 1336616351, Tehran, Iran.

Purpose: To investigate the alteration of choroid in patients with very severe non-proliferative diabetic retinopathy (NPDR) or early proliferative diabetic retinopathy (PDR) following panretinal photocoagulation (PRP).

Methods: Thirty-nine eyes of 21 patients with very severe non-proliferative diabetic retinopathy (NPDR) (19 eyes) and early proliferative diabetic retinopathy (PDR) (20 eyes) were recruited. Enhanced-depth imaging optical coherence tomography at baseline, 1, and 6 months after PRP was employed to measure choroidal parameters including total choroidal area (TCA) and choroidal vascular index (CVI). Read More

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September 2021

Ocular surface temperature measurement in diabetic retinopathy.

Exp Eye Res 2021 Aug 28;211:108749. Epub 2021 Aug 28.

Indira Gandhi Centre for Atomic Research, Kalpakkam, India. Electronic address:

Infrared thermography provides functional imaging by picturing the temperature pattern of the region imaged. The temperature correlates to the blood flow pattern and is used in the diagnosis of diseases like breast cancer, peripheral vascular disorders, diabetic neuropathy and fever screening. In the present study, the usage of ocular thermography for diagnosis of diabetic retinopathy is explored. Read More

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How to Achieve Near-Normal Visual Acuity with Bevacizumab in Diabetic Macular Edema Patients.

J Clin Med 2021 Aug 13;10(16). Epub 2021 Aug 13.

Chair and Department of Ophthalmology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Panewnicka 65 Street, 40-760 Katowice, Poland.

Patients suffering from diabetic retinopathy (DR) and diabetic macular edema (DME) are inherently interested in achieving normal or near-normal visual acuity. The study aimed to investigate factors influencing the visual acuity achieved by DME patients after bevacizumab (IVB) treatment. 98 patients (98 eyes) diagnosed with DR and DME underwent IVB treatment (9 injections/12 months). Read More

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Global and Regional Prevalence of Diabetic Retinopathy; A Comprehensive Systematic Review and Meta-analysis.

Semin Ophthalmol 2021 Aug 17:1-16. Epub 2021 Aug 17.

Department of Basic Sciences, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Purpose: We conducted a systematic search to estimate DR prevalence in different age and gender groups, and to evaluate the determinants of heterogeneity in its prevalence.

Methods: A systematic and comprehensive search from inception to August 10, 2020, was done in international databases, including Scopus, PubMed, Web of Science, Embase, and other data sources without any restriction to find cross-sectional studies related to the prevalence of DR.

Results: Of 6399 studies, 90 articles with a sample size of 563460 individuals and 204189 diabetic patients were analyzed. Read More

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Subclinical Hypothyroidism in Patients with Diabetic Retinopathy: Role of Vascular Endothelial Growth Factor.

Endocr Metab Immune Disord Drug Targets 2021 Aug 9. Epub 2021 Aug 9.

Department of Internal Medicine, Mansoura Specialized Medical Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt.

Background: Considering the vital role of vascular endothelial growth factor (VEGF) in the development of diabetic retinopathy (DR) in one hand and the frequent association between subclinical hypothyroidism (SCH) and DR on the other hand.

Objective: The present study was proposed to explore the possible role of VEGF in the relation between SCH and DR, thus we investigated the relation between SCH and VEGF levels in patients with DR.

Methods: Two hundred patients with DR were recruited in this study [100 patients with proliferative diabetic retinopathy (PDR) and 100 patients with non-proliferative diabetic retinopathy (NPDR)]. Read More

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Evaluation of Intravitreal Aflibercept for the Treatment of Severe Nonproliferative Diabetic Retinopathy: Results From the PANORAMA Randomized Clinical Trial.

JAMA Ophthalmol 2021 Sep;139(9):946-955

Regeneron Pharmaceuticals, Tarrytown, New York.

Importance: Proactive treatment of nonproliferative diabetic retinopathy (NPDR) reduces the risk of progression to vision-threatening complications.

Objective: To evaluate vascular endothelial growth factor blockade therapy with intravitreal aflibercept injections in eyes with severe NPDR without diabetic macular edema (DME).

Design, Setting, And Participants: The Study of the Efficacy and Safety of Intravitreal Aflibercept for the Improvement of Moderately Severe to Severe Nonproliferative Diabetic Retinopathy (PANORAMA) was a double-masked 100-week randomized clinical trial conducted in multiple centers worldwide. Read More

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September 2021

Macrophage-Like Cell Density Is Increased in Proliferative Diabetic Retinopathy Characterized by Optical Coherence Tomography Angiography.

Invest Ophthalmol Vis Sci 2021 Aug;62(10)

Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States.

Purpose: To quantitatively characterize macrophage-like cells (MLCs) at the vitreoretinal interface in different severity stages of diabetic retinopathy (DR) using optical coherence tomography angiography (OCTA).

Methods: The study included 72 eyes of 72 subjects: 18 healthy controls, 22 diabetes mellitus (DM) without DR, 17 nonproliferative DR (NPDR), and 15 proliferative DR (PDR). We obtained repeated (average, 6. Read More

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Outer retina dysfunction and choriocapillaris impairment in type 1 diabetes.

Sci Rep 2021 Jul 26;11(1):15183. Epub 2021 Jul 26.

Department of Ophthalmology, IRCCS Ospedale San Raffaele, University Vita-Salute, Via Olgettina, 60, Milan, Italy.

To study the outer retina morpho-functional characteristics and the choriocapillaris (CC) features in type 1 diabetic (T1D) patients, with and without signs of diabetic retinopathy (NPDR and NoDR). Twenty-five NPDR and 18 NoDR eyes were imaged by Optical Coherence Tomography Angiography. Ellipsoid zone (EZ) "normalized" reflectivity and CC perfusion density parameters, as flow deficits number (FDn), flow deficit average area (FDa) and flow deficit percentage (FD%), were analysed. Read More

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Ocular TGF-, Matrix Metalloproteinases, and TIMP-1 Increase with the Development and Progression of Diabetic Retinopathy in Type 2 Diabetes Mellitus.

Mediators Inflamm 2021 25;2021:9811361. Epub 2021 Jun 25.

Swiss Eye Institute, Rotkreuz and Retina Clinic, Berner Augenklinik am Lindenhofspital, 3012, Switzerland.

Diabetic retinopathy (DR) is a sight-threatening late complication of diabetes mellitus (DM). Even though its pathophysiology has not been fully elucidated, several studies suggested a role for transforming growth factor- (TGF-) , matrix metalloproteinases (MMPs), and tissue inhibitors of matrix metalloproteinase (TIMP) in the onset and progression of the disease. Consequently, the aim of this study was to analyze the concentrations of TGF-1, TGF-2, TGF-3, MMP-3, MMP-9, and TIMP-1 in patients with different stages of DR in order to identify stage-specific changes in their concentrations during the progression of the disease. Read More

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Detection of the Microvascular Changes of Diabetic Retinopathy Progression Using Optical Coherence Tomography Angiography.

Transl Vis Sci Technol 2021 06;10(7):31

Department of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China.

Purpose: To investigate microvascular parameters that are related to the severity of diabetic retinopathy (DR) with optical coherence tomography angiography (OCTA).

Methods: In total, 105 eyes from 105 diabetic patients were recruited in this prospective cross-sectional study, including 37 eyes with no clinical signs of DR (NoDR), 43 eyes with nonproliferative diabetic retinopathy (NPDR), and 25 eyes with proliferative diabetic retinopathy (PDR). Angiogram images from the parafoveal superficial capillary plexus (SCP), the deep capillary plexus (DCP), and the radial peripapillary capillary plexus were analyzed, and metrics were compared among groups. Read More

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Relating Retinal Vascular Oxygen Saturation and Microvasculature Morphology at Progressive Stages of Diabetic Retinopathy.

Transl Vis Sci Technol 2021 05;10(6)

Department of Ophthalmology, University of Southern California, Los Angeles, CA, USA.

Purpose: Diabetic retinopathy (DR) is a common cause of vision loss in working age adults and presents changes in retinal vessel oxygenation and morphology. The purpose of this study was to test the hypothesis that there is an association of retinal vessel oxygen saturation with vessel density (VD) and tortuosity in DR.

Methods: Ninety-five subjects were classified in the following groups: nondiabetic control (N = 25), no DR (N = 28), mild nonproliferative DR (NPDR; N = 21), moderate to severe NPDR (N = 14), or treated proliferative DR (PDR; N = 7). Read More

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Association analysis of 374T/A (rs1800624) receptor for advanced glycation end-products (RAGE) gene polymorphism with diabetic retinopathy in Pakistani patients.

Pak J Med Sci 2021 May-Jun;37(3):733-739

Prof. Dr. Abdul Khaliq Naveed, FCPS, PhD. Department of Biochemistry, Riphah International University, Islamabad, Pakistan.

Objectives: to determine the relationship of 374T/A (rs1800624) polymorphism in the gene encoding RAGE with Type-2 diabetes mellitus (T2DM), diabetic retinopathy (DR) and serum soluble RAGE (sRAGE) level in Pakistani patients.

Methods: A case-control study, conducted from January 2017 to December 2018, involving 150 healthy controls (HC), 150 T2DM patients with no retinopathy (DNR) and 150 DR patients diagnosed by coloured fundus photography. Tetra-primer amplification refractory mutation system - polymerase chain reaction (T-ARMS-PCR) was used for genotyping. Read More

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Blood Levels of Glycated Hemoglobin, D-Dimer, and Fibrinogen in Diabetic Retinopathy.

Diabetes Metab Syndr Obes 2021 2;14:2483-2488. Epub 2021 Jun 2.

Department of Ophthalmology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, 071000, People's Republic of China.

Purpose: This study aimed to describe the levels of glycated hemoglobin (HbA1c), D-dimer (D-D), and fibrinogen (FIB) in different types of diabetic retinopathy (DR).

Methods: A total of 61 patients with diabetes, who were treated in our department between November 2017 and May 2019, were selected. According to their non-mydriatic fundus photography and fundus angiography results, patients were divided into three groups, ie, the non-DR (NDR) group (n=23), the non-proliferative DR (NPDR) group (n=17), and the proliferative DR (PDR) group (n=21). Read More

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Citicoline and Vitamin B Eye Drops in Type 1 Diabetes: Results of a 36-Month Pilot Study Evaluating Macular Electrophysiological Changes.

Adv Ther 2021 07 5;38(7):3924-3936. Epub 2021 Jun 5.

IRCCS Fondazione Bietti, Via Livenza 3, 00198, Rome, Italy.

Introduction: Our aim was to evaluate the effects of 36 months of treatment with citicoline and vitamin B eye drops on macular function in patients with type 1 diabetes (DM1) with mild signs of non-proliferative diabetic retinopathy (NPDR).

Methods: A prospective, randomized, interventional, monocentric, double-masked study was conducted. Twenty patients with DM1 were enrolled and randomly divided into two groups: the DC group (10 patients; mean age ± standard deviation 46. Read More

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Diabetic Retinopathy and Hearing Loss: Results from the Fifth Korean National Health and Nutrition Survey.

J Clin Med 2021 May 28;10(11). Epub 2021 May 28.

Department of Ophthalmology, Hanyang University College of Medicine, Seoul 04763, Korea.

We investigated the association between the severity of diabetic retinopathy (DR) and hearing loss based on vascular etiology. We used data from the Korean National Health and Nutrition Survey 2010-2012. Adults aged >40 years with diabetes were enrolled. Read More

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Increased serum concentration of netrin-1 after intravitreal bevacizumab injection: is it a compensatory mechanism to counteract drug side effects?

BMC Ophthalmol 2021 May 31;21(1):243. Epub 2021 May 31.

Recep Tayyip Erdoğan University, Zihni Derin Yerleşkesi - Fener Mahallesi, 53100, Merkez/Rize, Turkey.

Background: To evaluate alterations in the serum concentrations of vascular endothelial growth factor (VEGF) and netrin-1 after intravitreal bevacizumab (BCZ) injection for the treatment of diabetic macular edema (DME).

Methods: This prospective case-control study included a total of 50 participants assigned to one of three groups, including 10 individuals with DME and non-proliferative diabetic retinopathy (NPDR), 13 with DME, and proliferative diabetic retinopathy (PDR), and 27 healthy individuals as a control group. Serum VEGF and netrin-1 concentrations were measured by enzyme-linked immunosorbent assays (ELISAs) immediately before, as well as 1 week and 1 month after, intravitreal BCZ injection. Read More

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Correlation of the retinopathy degree with the change of ocular surface and corneal nerve in patients with type 2 diabetes mellitus.

Int J Ophthalmol 2021 18;14(5):750-758. Epub 2021 May 18.

Department of Ophthalmology, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.

Aim: To investigate the change of ocular surface and corneal nerve and their correlation in patients suffering from type 2 diabetes mellitus under different degrees of retinopathy.

Methods: Totally 129 type 2 diabetes mellitus patients (257 eyes) were included. They were divided into three groups: no diabetic retinopathy (NDR) group (33 cases, 66 eyes), non-proliferative diabetic retinopathy (NPDR) group (32 cases, 64 eyes), and proliferative diabetic retinopathy (PDR) group (34 cases, 67 eyes). Read More

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Fluorophotometric Measurement of Corneal Autofluorescence in Diabetic and Normal Eyes.

Nepal J Ophthalmol 2020 Jul;12(24):201-208

Shri Bhagwan Mahavir Department of Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India.

Introduction: Corneal autofluorescence (AF) has been recommended as an indicator of diabetic retinopathy. This study was conducted to evaluate corneal autofluorescence in non-insulin dependent diabetes subjects (with and without diabetic retinopathy) and compare the changes with healthy subjects.

Materials And Methods: In this cross-sectional study, 145 eyes of diabetes mellitus subjects with and without diabetic retinopathy and 34 eyes of normal healthy subjects were included. Read More

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Dysregulation of miR-374a is involved in the progression of diabetic retinopathy and regulates the proliferation and migration of retinal microvascular endothelial cells.

Clin Exp Optom 2021 May 3:1-6. Epub 2021 May 3.

Department of Ophthalmology, Qingdao Chengyang People's Hospital, Shandong, China.

microRNAs (miRNAs) have been reported to be involved in the progression of various diseases. This study evaluated the expression and clinical value of miR-374a in diabetic retinopathy (DR) patients and analysed the effects of miR-374a on the progression of DR. Subjects were divided into four groups: healthy control, type 2 diabetes mellitus without DR (NDR), proliferation DR (PDR) and non-proliferation DR (NPDR). Read More

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Tumour necrosis factor α-308 G/a and -238 G/a polymorphisms as predicator of diabetic retinopathy in Egyptians.

Arch Physiol Biochem 2021 Apr 29:1-8. Epub 2021 Apr 29.

Ophthalmology Medical Retina, Research institute of Ophthalmology, Giza, Egypt.

Background: Diabetic retinopathy (DR) is a duration dependent serious micro vascular insult of diabetes mellitus. Inflammation has a critical role in the development of early and late stage of DR. Tumour necrosis factor alpha (TNF-α) is an inflammatory cytokine that promoteup regulation of adhesion molecule expression, leukocyte recruitment and monocyte attraction. Read More

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Proliferative diabetic retinopathy in patients with type 2 diabetes correlates with the presence of atherosclerosis cardiovascular disease.

Diabetol Metab Syndr 2021 Apr 26;13(1):48. Epub 2021 Apr 26.

Department of Geriatrics, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China.

Background: Atherosclerosis cardiovascular disease (ASCVD) is the main cause of morbidity and mortality in type 2 diabetes mellitus (T2DM). As most diabetic patients with ASCVD are asymptomatic, it is most neglected in clinical practice. For this reason, identifying high-risk ASCVD population with intensified treatment is very important. Read More

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Evaluation of the neuronal and microvascular components of the macula in patients with diabetic retinopathy.

Doc Ophthalmol 2021 Apr 16. Epub 2021 Apr 16.

Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, University of Health Sciences, Ankara, Turkey.

Purpose: To investigate whether abnormal retinal microcirculation correlates with retinal neuronal changes in untreated diabetic eyes without macular edema.

Methods: This study enrolled 29 diabetic patients without diabetic retinopathy (DR), 18 patients with mild non-proliferative diabetic retinopathy (NPDR), 15 patients with moderate NPDR, 14 patients with severe NPDR, 27 patients with proliferative diabetic retinopathy (PDR), and 25 healthy control subjects. Pattern electroretinography (PERG) and optical coherence tomography angiography (OCT-A) tests were performed. Read More

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Application of iris fluorescein angiography in diabetic iridopathy and retinopathy in brown iris.

Eur J Ophthalmol 2021 Apr 12:11206721211008785. Epub 2021 Apr 12.

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, P.R. China.

Purpose: This study aimed to evaluate the relationship between diabetic iridopathy (DI) and diabetic retinopathy (DR) and distinguish iris neovascular and physiological leakage using iris fluorescein angiography (IFA).

Methods: A total of 210 subjects were prospectively recruited in this study. Sixty normal subjects were divided equally into three groups (<40 years old, 40-59 years old, and 60-79 years old). Read More

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Association between serum fibroblast growth factor 21 level and sight-threatening diabetic retinopathy in Chinese patients with type 2 diabetes.

BMJ Open Diabetes Res Care 2021 03;9(1)

Department of Endocrinology, the Fourth Affiliated Hospital of China Medical University, Shenyang, China

Introduction: We conducted this cross-sectional study to explore the relationship between serum fibroblast growth factor 21 (FGF21) level and sight-threatening diabetic retinopathy (STDR).

Research Design And Methods: A total of 654 patients with type 2 diabetes were recruited. Diabetic retinopathy (DR) was evaluated by the bilateral retinal photography, and patients were assigned into groups of no DR (NDR) (n=345, 52. Read More

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Effect of Intravitreous Anti-Vascular Endothelial Growth Factor vs Sham Treatment for Prevention of Vision-Threatening Complications of Diabetic Retinopathy: The Protocol W Randomized Clinical Trial.

JAMA Ophthalmol 2021 Jul;139(7):701-712

Joslin Diabetes Center, Beetham Eye Institute, Harvard Department of Ophthalmology, Boston, Massachusetts.

Importance: The role of anti-vascular endothelial growth factor injections for the management of nonproliferative diabetic retinopathy (NPDR) without center-involved diabetic macular edema (CI-DME) has not been clearly established.

Objective: To determine the efficacy of intravitreous aflibercept injections compared with sham treatment in preventing potentially vision-threatening complications in eyes with moderate to severe NPDR.

Design, Setting, And Participants: Data for this study were collected between January 15, 2016, and May 28, 2020, from the ongoing DRCR Retina Network Protocol W randomized clinical trial, conducted at 64 US and Canadian sites among 328 adults (399 eyes) with moderate to severe NPDR (Early Treatment Diabetic Retinopathy Study severity level, 43-53), without CI-DME. Read More

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Evaluation of morphological characteristics of diabetic macular edema in patients with non-proliferative versus proliferative diabetic retinopathy: a spectral-domain optical coherence tomography study.

Int Ophthalmol 2021 Jul 26;41(7):2417-2424. Epub 2021 Mar 26.

2nd Department of Ophthalmology, National and Kapodistrian University of Athens, Athens, Greece.

Purpose: To evaluate the morphological characteristics in patients with diabetic macular edema (DME), either with co-existent non-proliferative diabetic retinopathy (NPDR) or with PDR.

Methods: Retrospective study includes 138 treatment naïve patients with DME, either with NPDR (n = 96) or in combination with PDR (n = 42). All patients underwent best corrected visual acuity (BCVA) measurement, spectral domain-optical coherence tomography (SD-OCT) and fluorescein angiography, while demographic characteristics were also recorded. Read More

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Prevalence of Diabetic Retinopathy in Oman: A Two Decade National Study.

Oman Med J 2021 Mar 17;36(2):e238. Epub 2021 Mar 17.

Center of Studies and Research, Ministry of Health, Muscat, Oman.

Objectives: Diabetes mellitus (DM) is one of the major chronic diseases with a world prevalence of 8.5%. Oman has shown a consistent rise in the prevalence of DM, reaching 14. Read More

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Non-diabetic Renal Diseases in Patients with Diabetes Mellitus Clinicopathological Correlation.

Indian J Nephrol 2020 Sep-Oct;30(5):295-300. Epub 2020 Aug 27.

Department of Nephrology, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India.

Background And Aims: Non-diabetic renal diseases (NDRDs) form an important part of disease manifestations in patients with diabetes.

Methods: This hospital-based prospective study was conducted to analyze incidence and spectrum of NDRDs in patients with diabetes with or without diabetic nephropathy (DN), effect of early specific interventions on outcome, and renal-retinal relationship in type 1 and type 2 diabetes mellitus with nephropathy. 44 Patients with T2DM with the clinical suspicion of NDRD were subjected to renal biopsy Renal biopsies were performed by using an automated biopsy gun. Read More

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Association of changes of retinal vessels diameter with ocular blood flow in eyes with diabetic retinopathy.

Sci Rep 2021 Feb 25;11(1):4653. Epub 2021 Feb 25.

Department of Ophthalmology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8560, Japan.

We investigated morphological changes of retinal arteries to determine their association with the blood flow and systemic variables in type 2 diabetes patients. The patients included 47 non-diabetic retinopathy eyes, 36 mild or moderate nonproliferative diabetic retinopathy (M-NPDR) eyes, 22 severe NPDR (S-NPDR) eyes, 32 PDR eyes, and 24 normal eyes as controls. The mean wall to lumen ratio (WLR) measured by adaptive optics camera was significantly higher in the PDR groups than in all of the other groups (all P < 0. Read More

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February 2021