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https://www.readbyqxmd.com/read/28525557/retinal-vascular-branching-in-healthy-and-diabetic-subjects
#1
Ting Luo, Thomas J Gast, Tyler J Vermeer, Stephen A Burns
Purpose: To measure the effect of nonproliferative diabetic retinopathy (NPDR) on retinal branching. To compare vascular branching in healthy and diabetic subjects with established biophysical models. Methods: Vascular bifurcations in arteries and veins were imaged in 17 NPDR and 26 healthy subjects with the Indiana adaptive optics scanning laser ophthalmoscope (AOSLO). Vessel measurements were grouped according to parent vessel diameters into large (≤50 ∼ <100 μm) and small (≤20 ∼ <50 μm) sizes...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28503436/association-of-choroidal-thickness-with-early-stages-of-diabetic-retinopathy-in-type-2-diabetes
#2
Zhi-Jun Shen, Xiu-Fen Yang, Jun Xu, Chong-Yang She, Wen-Wen Wei, Wan-Lu Zhu, Ning-Pu Liu
AIM: To assess the correlation between choroidal thickness (CT) and the early stages of diabetic retinopathy (DR) in type 2 diabetic patients. METHODS: We divided 83 diabetic patients (51-80 years of age; 50 females) into non diabetic retinopathy group (NDR) and mild/moderate nonproliferative diabetic retinopathy (NPDR) group, and compared them with 26 non-diabetic control subjects (51-78 years of age; 16 females). Subfoveal choroidal thickness (SFCT) and parafoveal choroidal thickness (PFCT) were measured using enhanced depth imaging spectral-domain optical coherence tomography (EDI-OCT)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28503423/microrna-126-a-promising-novel-biomarker-in-peripheral-blood-for-diabetic-retinopathy
#3
Li-Li Qin, Mei-Xia An, Yan-Li Liu, Han-Chun Xu, Zhi-Qing Lu
AIM: To investigate the content of serum microRNA-126 (miR-126) and its role in screening retinal endothelial injury and early diagnosis of proliferative diabetic retinopathy. METHODS: The study included 184 serum samples, 59 samples from healthy individuals, 44 samples from diabetes mellitus (DM) patients without diabetic retinopathy (NDR), 42 from non-proliferative diabetic retinopathy (NPDR) patients and 39 samples from proliferative diabetic retinopathy (PDR) patients...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28487377/the-uk-diabetic-retinopathy-electronic-medical-record-uk-dr-emr-users-group-report-2-real-world-data-for-the-impact-of-cataract-surgery-on-diabetic-macular-oedema
#4
Alastair K Denniston, Usha Chakravarthy, Haogang Zhu, Aaron Y Lee, David P Crabb, Adnan Tufail, Clare Bailey, Toks Akerele, Sahar Al-Husainy, Christopher Brand, Louise Downey, Alan Fitt, Rehna Khan, Vineeth Kumar, Aires Lobo, Sajjad Mahmood, Kaveri Mandal, Martin Mckibbin, Geeta Menon, Salim Natha, Jong Min Ong, Marie D Tsaloumas, Atul Varma, Elizabeth Wilkinson, Robert L Johnston, Catherine A Egan
AIM: To assess the rate of 'treatment-requiring diabetic macular oedema (DMO)' in eyes for the two  years before and after cataract surgery. METHODS: Multicentre national diabetic retinopathy (DR) database study with anonymised data extraction across 19 centres from an electronic medical record system. INCLUSION CRITERIA: eyes undergoing cataract surgery in patients with diabetes with no history of DMO prior to study start. The minimum dataset included: age, visual acuity (all time-points), injection episodes, timing of cataract surgery and ETDRS grading of retinopathy and maculopathy...
May 9, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28484225/multimodality-analysis-of-hyper-reflective-foci-and-hard-exudates-in-patients-with-diabetic-retinopathy
#5
Sijie Niu, Chenchen Yu, Qiang Chen, Songtao Yuan, Jiang Lin, Wen Fan, Qinghuai Liu
To investigate the correlations between hyper-reflective foci and hard exudates in patients with non-proliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy (PDR) by spectral-domain optical coherence tomography (SD OCT) images. Hyper-reflective foci in retinal SD OCT images were automatically detected by the developed algorithm. Then, the cropped CFP images generated by the semi-automatic registration method were automatically segmented for the hard exudates and corrected by the experienced clinical ophthalmologist...
May 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28483496/relationship-between-internal-reflectivity-of-diabetic-microaneurysms-on-sd-oct-and-detection-on-oct-angiography
#6
Mariacristina Parravano, Daniele De Geronimo, Fabio Scarinci, Lea Querques, Gianni Virgili, Joseph Michael Simonett, Monica Varano, Francesco Bandello, Giuseppe Querques
PURPOSE: To correlate the appearance of Microaneurysms (MAs) on structural spectral-domain optical coherence tomography (SD-OCT) with their detection on OCT angiography (OCTA) in patients with non-proliferative diabetic retinopathy (NPDR). DESIGN: Inter-instrument reliability study. METHODS: Sixteen patients with NPDR without macular edema underwent SD-OCT and OCTA. To compare MAs seen on OCTA to those on SD-OCT, we superimposed the OCTA superficial capillary plexus (SCP) vascular landmarks onto those of the near infrared...
May 5, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28456825/expression-of-angiopoietin-like-protein-8-correlates-with-vegf-in-patients-with-proliferative-diabetic-retinopathy
#7
Qianyi Lu, Li Lu, Wei Chen, Peirong Lu
PURPOSE: To investigate the vitreous and serum levels of angiopoietin-like protein 8 (ANGPTL-8) and vascular endothelial growth factor (VEGF) in patients with proliferative diabetic retinopathy (PDR). The serum levels of these factors were also analyzed in patients with diabetes and no diabetic retinopathy (NDR) and with non-proliferative diabetic retinopathy (NPDR), to detect the possible correlation between the ANGPTL-8 levels and hyperlipidemia. METHODS: Vitreous samples were obtained from 28 patients with PDR and from 12 patients without diabetes and with idiopathic macular hole (IMH)...
April 29, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28452992/influence-of-baseline-diabetic-retinopathy-status-on-initial-anatomical-response-of-intravitreal-ranibizumab-therapy-for-diabetic-macular-oedema
#8
L Nicholson, N V Patrao, J Ramu, C Vazquez-Alfageme, M Muwas, R Rajendram, P G Hykin, S Sivaprasad
PurposeIntraocular vascular endothelial growth factor (VEGF) levels increases with the severity of diabetic retinopathy. Response of diabetic macular oedema (DMO) to ranibizumab is driven by VEGF suppression. We hypothesised that the initial reduction of central macular thickness by ranibizumab should be maximum in severe diabetic retinopathy until the levels of VEGF decreases to the levels observed in eyes with mild retinopathy.MethodsConsecutive patients with centre-involving DMO (central subfield thickness (CSFT)>300 μm) who had three consecutive monthly ranibizumab injections followed by as needed therapy were included...
April 28, 2017: Eye
https://www.readbyqxmd.com/read/28448655/change-in-diabetic-retinopathy-through-2-years-secondary-analysis-of-a-randomized-clinical-trial-comparing-aflibercept-bevacizumab-and-ranibizumab
#9
Susan B Bressler, Danni Liu, Adam R Glassman, Barbara A Blodi, Alessandro A Castellarin, Lee M Jampol, Paul L Kaufman, Michele Melia, Harinderjit Singh, John A Wells
Importance: Anti-vascular endothelial growth factor (anti-VEGF) therapy for diabetic macular edema (DME) favorably affects diabetic retinopathy (DR) improvement and worsening. It is unknown whether these effects differ across anti-VEGF agents. Objective: To compare changes in DR severity during aflibercept, bevacizumab, or ranibizumab treatment for DME. Design, Setting, and Participants: Preplanned secondary analysis of data from a comparative effectiveness trial for center-involved DME was conducted in 650 participants receiving aflibercept, bevacizumab, or ranibizumab...
April 27, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28429904/effect-of-lutein-supplementation-on-visual-function-in-nonproliferative-diabetic-retinopathy
#10
Ping-Chuan Zhang, Chang-Rui Wu, Zhi-Lun Wang, Li-Yuan Wang, Yue Han, Shu-Liu Sun, Qing-Shan Li, Le Ma
BACKGROUND AND OBJECTIVES: The purpose of this study was to determine whether supplementation with lutein improved visual function in patients with nonproliferative diabetic retinopathy (NPDR). METHODS AND STUDY DESIGN: In this randomized, double-blind, placebo-controlled trial, 31 patients with NPDR were assigned randomly to 10 mg/d of lutein or identical placebo for 36 weeks. Visual performance indices, including visual acuity (VA), contrast sensitivity (CS) and glare sensitivity (GS) at four different spatial frequencies, were measured at baseline, week 18 and 36...
May 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28420575/correlation-of-various-serum-biomarkers-with-the-severity-of-diabetic-retinopathy
#11
M Nalini, B V Raghavulu, A Annapurna, P Avinash, Vishala Chandi, N Swathi, Wasim
Hyperglycemia induced inflammation and angiogenic factors are implicated as a contributor to the onset and progression of diabetic retinopathy (DR) in type 2 diabetes mellitus patients (T2DM). Tumor necrosis factor (TNF-alpha) and C-reactive protein (CRP) are inflammatory cytokines which induce retinal VEGF and are involved in the progression of proliferative diabetic retinopathy (PDR). Therefore the aim of the present study is to investigate the relationship between diabetic retinopathy and systemic inflammation in patients with type 2 diabetes mellitus...
April 8, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28403072/retinal-microvascular-alterations-related-to-diabetes-assessed-by-optical-coherence-tomography-angiography-a-cross-sectional-analysis
#12
Julien Gozlan, Pierre Ingrand, Olivier Lichtwitz, Agathe Cazet-Supervielle, Léa Benoudis, Michele Boissonnot, Samy Hadjadj, Nicolas Leveziel
Fluorescein angiography has been so far the gold-standard test to assess diabetic macular ischemia (DMI), a cause of irreversible visual impairment in diabetic patients. The aim of this study was to investigate foveal avascular zone (FAZ) and perifoveal microcirculation changes in eyes with nonproliferative diabetic retinopathy (NPDR) using optical coherence tomography angiography (OCTA), a new and noninvasive vascular imaging technique.Cross-sectional study including eyes of diabetic patients with NPDR.All patients underwent medical history, best-corrected visual acuity (BCVA) measurement, slit-lamp and fundus examination, multicolor imaging, SD-OCT, and swept-source OCT...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28387229/assessment-of-conjunctival-microvascular-hemodynamics-in-stages-of-diabetic-microvasculopathy
#13
Maziyar M Khansari, Justin Wanek, Michael Tan, Charlotte E Joslin, Jacob K Kresovich, Nicole Camardo, Norman P Blair, Mahnaz Shahidi
Diabetes impairs the microcirculation and function of various vital tissues throughout the body. The conjunctival microcirculation can be non-invasively imaged and thus enables assessment of microvascular hemodynamics. In this study, alterations in conjunctival microvascular hemodynamics were quantitatively assessed at stages of increasing diabetic microvasculopathy based on diabetic retinopathy (DR). Subjects were categorized into non-diabetic control (C, N = 34), no clinically visible DR (NDR, N = 47), non-proliferative DR (NPDR, N = 45), and proliferative DR (PDR, N = 35)...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28367202/effect-of-topical-nepafenac-in-prevention-of-macular-edema-after-cataract-surgery-in-patients-with-non-proliferative-diabetic-retinopathy
#14
Muhammad Haroon Sarfraz, Rana Intisar Ul Haq, Mohammad Asim Mehboob
OBJECTIVE: To determine the efficacy of topical Nepafenac (0.1%), administered post-operatively in prevention of Macular Edema (ME), after cataract surgery in patients with Non-Proliferative Diabetic Retinopathy (NPDR). METHODS: This randomized control trial was conducted at Armed Forces Institute of Ophthalmology (AFIO), Rawalpindi from Sep 2015 to Sep 2016. Sixty eyes of 60 patients with NPDR underwent phacoemulsification with intraocular lens implantation. Group 1 received 0...
January 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28362051/deep-capillary-macular-perfusion-indices-obtained-with-oct-angiography-correlate-with-degree-of-nonproliferative-diabetic-retinopathy
#15
Kumar Sambhav, Khaled K Abu-Amero, Kakarla V Chalam
PURPOSE: To evaluate the integrity of macular and temporomacular vasculature in nonproliferative diabetic retinopathy (NPDR) with noninvasive optical coherence tomography angiography (OCTA) and correlate perfusion indices with degree of NPDR. METHODS: In this prospective observational cross-sectional study, 102 eyes with newly diagnosed NPDR (mild NPDR, 36; moderate NPDR, 21; severe NPDR, 13; NPDR with diabetic macular edema [DME], 32) underwent OCTA. Sixty eyes of normal subjects served as control...
March 27, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28355247/effects-of-photocoagulation-on-ocular-blood-flow-in-patients-with-severe-non-proliferative-diabetic-retinopathy
#16
Takeshi Iwase, Misato Kobayashi, Kentaro Yamamoto, Eimei Ra, Hiroko Terasaki
PURPOSE: To investigate ocular blood flow and correlations between ocular blood flow and variables in patients with severe non-proliferative diabetic retinopathy (S-NPDR) following panretinal photocoagulation (PRP). METHODS: In this retrospective, cross-sectional study, the blood flow on the optic nerve head (ONH) and choroid was assessed with laser speckle flowgraphy (LSFG) using the mean blur rate (MBR) in 76 eyes of 76 patients with S-NPDR who underwent PRP, 39 eyes of 39 patients with S-NPDR who did not undergo PRP, and 71 eyes of 71 normal subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28336215/association-of-increased-levels-of-mcp-1-and-cathepsin-d-in-young-onset-type-2-diabetes-patients-t2dm-y-with-severity-of-diabetic-retinopathy
#17
Sruthi Reddy, Anandakumar Amutha, Ramachandran Rajalakshmi, Regin Bhaskaran, Finny Monickaraj, Sampathkumar Rangasamy, Ranjit Mohan Anjana, Shiny Abhijit, Kuppan Gokulakrishnan, Arup Das, Viswanathan Mohan, Muthuswamy Balasubramanyam
AIM: Young onset type 2 diabetes patients (T2DM-Y) have been shown to possess an increased risk of developing microvascular complications particularly diabetic retinopathy. However, the molecular mechanisms are not clearly understood. In this study, we investigated the serum levels of monocyte chemotactic protein 1 (MCP-1) and cathepsin-D in patients with T2DM-Y without and with diabetic retinopathy. METHODS: In this case-control study, participants comprised individuals with normal glucose tolerance (NGT=40), patients with type 2 diabetes mellitus (T2DM=35), non-proliferative diabetic retinopathy (NPDR=35) and proliferative diabetic retinopathy (PDR=35)...
May 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28336057/hemorrhage-and-or-microaneurysm-severity-and-count-in-ultrawide-field-images-and-early-treatment-diabetic-retinopathy-study-photography
#18
Paolo S Silva, Hala El-Rami, Rasha Barham, Aditi Gupta, Alan Fleming, Jano van Hemert, Jerry D Cavallerano, Jennifer K Sun, Lloyd Paul Aiello
OBJECTIVE: To evaluate detection of hemorrhage and/or microaneurysm (H/Ma) using ultrawide field (UWF) retinal imaging as compared with standard Early Treatment Diabetic Retinopathy Study (ETDRS) 7-field photographs (ETDRS photos). DESIGN: Single-site comparative study of UWF images and ETDRS photos. PARTICIPANTS: One hundred twenty-six eyes of 69 patients with no diabetic retinopathy (DR) or mild or moderate nonproliferative DR (NPDR). METHODS: Stereoscopic 200° UWF images and stereoscopic 35mm 30° 7-field color photographs were acquired on the same visit...
March 20, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28333883/quantification-of-retinal-vessel-tortuosity-in-diabetic-retinopathy-using-optical-coherence-tomography-angiography
#19
Hyungwoo Lee, Minsub Lee, Hyewon Chung, Hyung Chan Kim
PURPOSE: To investigate the association of vessel tortuosity with severity of diabetic retinopathy (DR) using optical coherence tomography angiography. METHODS: We retrospectively analyzed 30 healthy eyes and 121 eyes of diabetic subjects with no DR, mild nonproliferative DR (NPDR), moderate to severe NPDR and proliferative DR (PDR). Binarized images were used to quantify the vessel tortuosity, vessel density, foveal avascular zone (FAZ) area, and FAZ acircularity...
March 22, 2017: Retina
https://www.readbyqxmd.com/read/28332564/pupillary-responses-in-non-proliferative-diabetic-retinopathy
#20
Jason C Park, Yi-Fan Chen, Norman P Blair, Felix Y Chau, Jennifer I Lim, Yannek I Leiderman, Mahnaz Shahidi, J Jason McAnany
The goal of this study was to determine the extent of rod-, cone-, and melanopsin-mediated pupillary light reflex (PLR) abnormalities in diabetic patients who have non-proliferative diabetic retinopathy (NPDR). Fifty diabetic subjects who have different stages of NPDR and 25 age-equivalent, non-diabetic controls participated. PLRs were measured in response to full-field, brief-flash stimuli under conditions that target the rod, cone, and intrinsically-photosensitive (melanopsin) retinal ganglion cell pathways...
March 23, 2017: Scientific Reports
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