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Hsia Y, Yang CM. Bilateral vitrectomy in patients with proliferative diabetic retinopathy-characteristics and surgical outcomes. Graefes Arch Clin Exp Ophthalmol 2024:10.1007/s00417-024-06462-5. [PMID: 38578330 DOI: 10.1007/s00417-024-06462-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 02/11/2024] [Accepted: 03/22/2024] [Indexed: 04/06/2024] Open
Abstract
PURPOSE Comparing characteristics and outcomes of patients with bilateral proliferative diabetic retinopathy (PDR) undergoing concurrent and sequential vitrectomy. METHODS Patients having bilateral vitrectomy were classified into concurrent (requiring bilateral surgery simultaneously) and sequential (indicating vitrectomy in one eye later) groups. Clinical characteristics and outcomes were compared, and correlation between the first and second-operated eyes was analyzed. RESULTS One hundred eight and 126 eyes were in the concurrent and sequential groups, respectively. The sequential group was older (50 vs. 45 years, P = 0.017), had less retinal detachment (54 vs. 77%, P < 0.001), and better visual outcomes (0.79 vs. 1.30, P = 0.021), especially the second-operated eyes. The concurrent group had weaker correlations of disease severity (phi coefficient: 0.36 vs. 0.61) and post-operative visual acuity (r: 0.12 vs. 0.34) between the first- and second-operated eyes than the sequential group. Prior intravitreal injection of anti-vascular endothelial growth factor (odds ratio [OR] 0.37, 95% confidence interval [CI] 0.15-0.86, P = 0.025) predicted better outcomes, while post-operative neovascular glaucoma predicted worse outcomes (OR 6.5, 95% CI 1.7-27.9, P = 0.008). CONCLUSIONS PDR patients requiring surgery concurrently were younger and had more severe diseases and worse outcomes. However, poor outcomes in the first eye did not predict similar outcomes in the second eye.
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Affiliation(s)
- Yun Hsia
- Department of Ophthalmology, National Taiwan University Hospital, No. 7, Chung-Shan S. Rd., Taipei, 100, Taiwan
| | - Chung-May Yang
- Department of Ophthalmology, National Taiwan University Hospital, No. 7, Chung-Shan S. Rd., Taipei, 100, Taiwan.
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Chen SN, Chen SJ, Wu TT, Wu WC, Yang CH, Yang CM. Refining vitrectomy for proliferative diabetic retinopathy. Graefes Arch Clin Exp Ophthalmol 2023; 261:3659-3670. [PMID: 37314522 PMCID: PMC10667443 DOI: 10.1007/s00417-023-06134-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/26/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023] Open
Abstract
Pars plana vitrectomy (PPV) is the main treatment modality for patients with severe diabetic retinopathy. With the development of systems for microincision, wide-angle viewing, digitally assisted visualization, and intraoperative optical coherence tomography, contemporary PPV for diabetic retinopathy has been performed on a wider range of indications than previously considered. In this article, we reviewed, in conjunction with our collective experiences with Asian patients, the applications of new technologies for PPV in eyes with diabetic retinopathy and highlighted several important procedures and entities not generally reiterated in the literature, in order for vitreoretinal surgeons to optimize their approaches when facing the challenges imposed by the complications in diabetic eyes.
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Affiliation(s)
- San-Ni Chen
- Department of Ophthalmology, China Medical University Hospital, Taichung, Taiwan
- Department of Medicine, School of Medicine, China Medical University, Taichung, Taiwan
| | - Shih-Jen Chen
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tsung-Tien Wu
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Ophthalmology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Wei-Chi Wu
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chang-Hao Yang
- Department of Ophthalmology, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei, 10002, Taiwan
- School of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chung-May Yang
- Department of Ophthalmology, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei, 10002, Taiwan.
- School of Medicine, National Taiwan University, Taipei, Taiwan.
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Kaźmierczak K, Żuchowski P, Stafiej J, Malukiewicz G. Functional and structural outcomes and complications after pars plana vitrectomy for severe features of proliferative diabetic retinopathy in type 1 and type 2 diabetes mellitus. PLoS One 2023; 18:e0288805. [PMID: 37471387 PMCID: PMC10358898 DOI: 10.1371/journal.pone.0288805] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 07/03/2023] [Indexed: 07/22/2023] Open
Abstract
PURPOSE To evaluate the functional and structural outcomes as well as postoperative complications after pars plana vitrectomy (PPV) for severe features of proliferative diabetic retinopathy (PDR) in type 1 and type 2 diabetes mellitus (DM) patients. METHODS Twenty two eyes of type 1 diabetics (DM1 group) and 27 eyes of type 2 diabetics (DM2 group) were included. Best corrected visual acuity (BCVA), intraocular pressure (IOP), postoperative structural changes in optical coherence tomography (OCT) and postoperative complications such as recurrent vitreous haemorrhage, diabetic macular oedema, secondary glaucoma and persistent tractional retinal detachment (TRD) were assessed and compared between the two groups. RESULTS Complete reattachment of retina was achieved in 88.9% from the DM1 group and in 95.5% from the DM2 group and remained attached in follow-up. BCVA in DM2 group was significantly lower preoperatively (p = 0.04). Mean postoperative BCVA significantly improved in both studied groups, but it was more evident in eyes of type 2 diabetics compared to type 1 diabetics. In eyes in the DM1 group there was perceptible stabilisation of BCVA. Poor visual acuity or lack of improvement in BCVA in the DM1 group was related to preoperative subretinal haemorrhage in macular region, and TRD involving macula, whereas in the DM2 group-to preoperative subretinal haemorrhage and neovascular glaucoma. The postoperative structural changes (disruption of EZ and ELM) were observed more often in DM2 group, but had the greatest impact on BCVA in eyes of type 1 DM. Complications after PPV for PDR were rare and hadn't a significant influence on the final functional outcomes in both groups. CONCLUSIONS Functional improvement after PPV for severe features of proliferative diabetic retinopathy were more noticeable in patients with type 2 DM. Postoperative structural changes had more negative impact on BCVA in type 1 diabetics.
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Affiliation(s)
- Karolina Kaźmierczak
- Department of Ophthalmology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Paweł Żuchowski
- Clinic of Rheumatology and Connective Tissue Diseases, Jan Biziel University Hospital No. 2, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Joanna Stafiej
- Department of Ophthalmology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Grażyna Malukiewicz
- Department of Ophthalmology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
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Zhang M, Zhang J, Xu G, Ruan L, Huang X. Comparison of Clinical Profiles, Demographics, and Surgical Outcomes of 25-Gauge Vitrectomy for Proliferative Diabetic Retinopathy in Young Adults with Type 1 or Type 2 Diabetes. Diabetes Metab Syndr Obes 2023; 16:1967-1975. [PMID: 37408727 PMCID: PMC10318103 DOI: 10.2147/dmso.s412157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/19/2023] [Indexed: 07/07/2023] Open
Abstract
Purpose Proliferative diabetic retinopathy (PDR) is a leading cause of poor vision in young adults. This study sought to evaluate the clinical characteristics and outcomes of primary vitrectomy for PDR in young adults. Patients and Methods Medical data were retrospectively collected at a large ophthalmology hospital in China. We analyzed data for 99 patients (140 eyes) aged <45 years with T1D or T2D who underwent primary vitrectomy for PDR-related complications. Results There were 18 patients with T1D and 81 patients with T2D. The proportion of males was significantly greater than that of females in both groups. The T1D group had a longer duration of diabetes (P = 0.008), younger age at primary vitrectomy (P = 0.049), and lower body mass index (P < 0.001) than the T2D group. The proportion of eyes with rhegmatogenous retinal detachment (RRD) was greater but the proportion of eyes with traction retinal detachment (TRD) was lower in the T1D group than in the T2D group. The final best-corrected visual acuity (BCVA) improved or remained stable in 100% and 85.3% of eyes and decreased in 0% and 14.7% of eyes in the T1D and T2D groups, respectively. After surgery, the incidence of postoperative complications was significant greater in the T2D group than in the T1D group (P = 0.045). Factors influencing the final visual acuity included preoperative BCVA in both groups, the duration of diabetes (P = 0.031) and preoperative FVP (P = 0.004) in the T1D group, and preoperative RRD (P < 0.001) and postoperative NVG (P < 0.001) in the T2D group. Conclusion In this retrospective study, young adults with T2D who underwent vitrectomy had worse final visual acuity and more complications than young adults with T1D.
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Affiliation(s)
- Meng Zhang
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
| | - Juan Zhang
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
| | - Gezhi Xu
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
| | - Lu Ruan
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
| | - Xin Huang
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
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Liao M, Huang Y, Wang J, Meng X, Liu Y, Yu J, Yan H. Long-term outcomes of administration of intravitreal triamcinolone acetonide after posterior vitreous detachment during pars plana vitrectomy for proliferative diabetic retinopathy. Br J Ophthalmol 2023; 107:560-564. [PMID: 34844917 DOI: 10.1136/bjophthalmol-2021-320332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 11/05/2021] [Indexed: 11/04/2022]
Abstract
AIM To evaluate the long-term outcomes of intravitreal triamcinolone acetonide (TA) administration after posterior vitreous detachment (PVD) during pars plana vitrectomy (PPV) for patients with proliferative diabetic retinopathy (PDR). METHODS A total of 189 eyes (152 patients) who underwent PPV for severe PDR were reviewed. Intravitreal injection of TA (IVTA) was administered during PPV in 118 eyes (PPV+IVTA group), and 71 eyes did not receive IVTA (PPV group). Immediately after PVD, when most of the vitreous and proliferative membranes were removed, 0.1 mL TA (40 mg/mL) was injected into the vitreous cavity in the PPV+IVTA group. All patients were followed-up for least 12 months. Visual outcomes and postoperative complications were recorded and compared between the two groups. RESULTS IVTA was helpful for proliferative membrane peeling and haemostasis during PPV. In the PPV+IVTA group, best-corrected visual acuity had significantly improved and the intraocular pressure was controlled well during the follow-up. The incidence of early recurrent vitreous haemorrhage after PPV was significantly lower in the PPV+IVTA group (1.7%) than in the PPV group (9.9%) (p=0.028). CONCLUSION The administration of IVTA after PVD during PPV can effectively improve the final visual outcomes and prevent postoperative complications in patients with severe PDR.
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Affiliation(s)
- Mengyu Liao
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yunli Huang
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China
| | - Jiaxing Wang
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Xiangda Meng
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yuanyuan Liu
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China
| | - Jinguo Yu
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China
| | - Hua Yan
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China
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Wang W, Qu C, Yan H. Network meta-analysis of intravitreal conbercept as an adjuvant to vitrectomy for proliferative diabetic retinopathy. Front Endocrinol (Lausanne) 2023; 14:1098165. [PMID: 36896181 PMCID: PMC9989469 DOI: 10.3389/fendo.2023.1098165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/31/2023] [Indexed: 02/23/2023] Open
Abstract
Purpose Intravitreal Conbercept (IVC) has been shown to be effective in treating proliferative diabetic retinopathy (PDR) as an adjuvant in pars plana vitrectomy (PPV); however, the best timing of IVC injection remains unknown. This network meta-analysis (NMA) sought to ascertain the comparative efficacy of different timings of IVC injection as an adjuvant to PPV on PDR. Methods A comprehensive literature search was conducted in PubMed, EMBASE, and the Cochrane Library to identify relevant studies published before August 11, 2022. According to the mean time of IVC injection before PPV, the strategy was defined as very long interval if it was > 7 days but ≤ 9 days, long interval if it was > 5 days but ≤ 7 days, mid interval if it was > 3 days but ≤ 5 days, and short interval if it was ≤ 3 days, respectively. The strategy was defined as perioperative IVC if IVC was injected both before and at the end of PPV, and the strategy was intraoperative IVC if injected immediately at the end of PPV. The mean difference (MD) and odds ratio (OR) with corresponding 95% confidence interval (CI) for continuous and binary variables, respectively, were computed through network meta-analysis using Stata 14.0 MP. Results Eighteen studies involving 1149 patients were included. There was no statistical difference between intraoperative IVC and control in treating PDR. Except for a very long interval, preoperative IVC significantly shortened operation time, and reduced intraoperative bleeding and iatrogenic retinal breaks. Long and short intervals reduced endodiathermy application, and mid and short intervals reduced postoperative vitreous hemorrhage. Moreover, long and mid intervals improved BCVA and central macular thickness. However, very long interval was associated with an increased risk of postoperative vitreous hemorrhage (RR: 3.27, 95%CI: 1.84 to 5.83). Moreover, mid interval was better than intraoperative IVC in shortening operation time (MD: -19.74, 95%CI: -33.31 to -6.17). Conclusions There are no discernible effects of intraoperative IVC on PDR, but preoperative IVC, except for very long interval, is an effective adjuvant to PPV for treating PDR.
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Affiliation(s)
- Weiwei Wang
- Shaanxi Eye Hospital, Xi’an People’s Hospital (Xi’an Fourth Hospital), Xi’an, China
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Patel V, Rohowetz LJ, Pakravan P, Kalavar M, Yannuzzi NA, Sridhar J. Outcomes of Pars Plana Vitrectomy with Panretinal Photocoagulation for Treatment of Proliferative Diabetic Retinopathy Without Retinal Detachment: A Seven-Year Retrospective Study. Clin Ophthalmol 2023; 17:471-478. [PMID: 36755887 PMCID: PMC9899932 DOI: 10.2147/opth.s400474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/20/2023] [Indexed: 02/04/2023] Open
Abstract
Objective To review clinical outcomes of patients with proliferative diabetic retinopathy (PDR) and vitreous hemorrhage (VH) who underwent pars plana vitrectomy (PPV) with endolaser panretinal photocoagulation (PRP) without retinal detachment (RD) repair. Methods Retrospective chart review of the rate of postoperative clinical findings and visual acuity in patients with PDR from May 2014 to August 2021. Results Pars plana vitrectomy with endolaser PRP was performed in 81 eyes of 81 patients (mean age of 62.1 ± 10.5 years). At a median follow-up of 18 months, mean Snellen best-corrected visual acuity (BCVA) significantly improved from 20/774 preoperatively to 20/53 at last follow-up (P < 0.001). Postoperative complications and clinical findings included VH (12.3%), diabetic macular edema (DME) (12.3%), ocular hypertension (8.6%), RD (4.9%), and need for additional PPV (6.2%). Eyes with PRP performed within 6 months before surgery had a lower frequency of developing postoperative VH (5.3%) compared to eyes that received PRP more than 6 months before surgery (27.3%, P = 0.04). Eyes that received preoperative anti-vascular endothelial growth factor (VEGF) treatment (2.0%) had a lower frequency of postoperative VH compared to eyes that did not receive anti-VEGF treatment (14.3%, P = 0.04). Eyes that received intraoperative sub-tenon triamcinolone acetonide developed postoperative DME (4.0%) less frequently than eyes that did not receive sub-tenon triamcinolone acetonide (26.7%, P = 0.04). Conclusion In patients with PDR and VH, PPV with PRP yielded significant improvements in visual acuity and resulted in overall low rates of recurrent postoperative VH. Preoperative anti-VEGF and PRP laser treatment were associated with lower rates of postoperative VH. Furthermore, intraoperative use of sub-tenon triamcinolone acetonide was associated with a lower rate of postoperative DME. Pars plana vitrectomy with endolaser PRP in conjunction with the aforementioned pre- and intraoperative therapies is an effective treatment for patients with PDR and VH.
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Affiliation(s)
- Veshesh Patel
- Department of Ophthalmology, Bascom Palmer Eye Institute University of Miami, Miami, FL, USA
| | - Landon J Rohowetz
- Department of Ophthalmology, Bascom Palmer Eye Institute University of Miami, Miami, FL, USA
| | - Parastou Pakravan
- Department of Ophthalmology, Bascom Palmer Eye Institute University of Miami, Miami, FL, USA
| | - Meghana Kalavar
- Department of Ophthalmology, Bascom Palmer Eye Institute University of Miami, Miami, FL, USA
| | - Nicolas A Yannuzzi
- Department of Ophthalmology, Bascom Palmer Eye Institute University of Miami, Miami, FL, USA
| | - Jayanth Sridhar
- Department of Ophthalmology, Bascom Palmer Eye Institute University of Miami, Miami, FL, USA,Correspondence: Jayanth Sridhar, Department of Ophthalmology, Bascom Palmer Eye Institute, 900 NW 17th St, Miami, FL, 33136, USA, Tel +1 305 326-6124, Email
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Zhang M, Xu G, Ruan L, Huang X, Zhang T. Clinical Characteristics and Surgical Outcomes of Complications of Proliferative Diabetic Retinopathy in Young versus Older Patients with Type 2 Diabetes. Diabetes Metab Syndr Obes 2023; 16:37-45. [PMID: 36760591 PMCID: PMC9843506 DOI: 10.2147/dmso.s382603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 11/24/2022] [Indexed: 01/18/2023] Open
Abstract
PURPOSE Proliferative diabetic retinopathy (PDR) is a leading vision-threatening disease. In this study, we investigated the clinical features of PDR and the surgical outcomes of its complications in patients with type 2 diabetes (T2D). PATIENTS AND METHODS We retrospectively reviewed the medical data of patients with T2D who underwent vitrectomy for PDR between January 2016 and June 2021. The patients were divided into two groups by age (young patients, < 45 years; older patients, ≥ 45 years). RESULTS There were 149 eyes (100 patients) in the young patient group and 315 eyes (256 patients) in the older patient group. The proportion of males and the proportion of patients requiring binocular surgery were much higher in the young patient group than in the older patient group (P = 0.005 and P < 0.001, respectively). In the young patient group, 26.2% of eyes had active fibrovascular proliferation compared with only 11.4% in the older patient group (P < 0.001). The final best-corrected visual acuity (BCVA) was significantly improved relative to the preoperative BCVA in both groups (P < 0.001). After surgery, there were no significant differences in the incidence of postoperative neovascular glaucoma (NVG) or recurrent vitreous hemorrhage (VH) between the two groups. The incidence of postoperative recurrent retinal detachment was higher in the young patient group (P = 0.033). The risk factors associated with the visual outcomes in the young patient group included preoperative BCVA (P < 0.001), renal diseases (P = 0.001), postoperative NVG (P < 0.001), and recurrent VH (P = 0.028). CONCLUSION In this retrospective study, young patients who underwent vitrectomy for PDR had more severe clinical characteristics before vitrectomy. However, vitrectomy (combined with cataract surgery when necessary) achieved better final visual outcomes in young patients than in older patients with T2D.
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Affiliation(s)
- Meng Zhang
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
| | - Gezhi Xu
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
| | - Lu Ruan
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
| | - Xin Huang
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Correspondence: Xin Huang; Ting Zhang, Department of Ophthalmology, Eye & ENT Hospital, Fudan University, 83 Fenyang Road, Shanghai, 200031, People’s Republic of China, Tel +86-21-64377134, Fax +86-21-64377151, Email ;
| | - Ting Zhang
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
- Institute of Eye Research, Eye & ENT Hospital, Fudan University, Shanghai, 200031, People’s Republic of China
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Engelhard SB, Kovacs K, Kiss S. Medical Versus Surgical Management of Proliferative Diabetic Retinopathy: A Review of Current Treatments, Efficacy, Cost-effectiveness, and Compliance-related Outcomes. Int Ophthalmol Clin 2022; 62:3-16. [PMID: 36170217 DOI: 10.1097/iio.0000000000000437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Zhao Q, An W, Han J. Cytokine levels in the aqueous humor of young and senior patients with proliferative diabetic retinopathy. Eur J Ophthalmol 2022; 33:11206721221129431. [PMID: 36163689 DOI: 10.1177/11206721221129431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To evaluate the aqueous humor levels of vascular endothelial growth factor (VEGF), connective tissue growth factor (CTGF), and tumor necrosis factor α (TNF-α) as biomarkers of the severity of proliferative diabetic retinopathy (PDR) in young and senior patients. METHODS This was a prospective clinical study. From October 2020 to June 2021, 37 patients (37 eyes) who were diagnosed with PDR and received pars plana vitrectomy (PPV) at Tianjin Medical University Eye Hospital were recruited and allocated to either the young (16 patients, 16 eyes) or senior subgroup (21 patients, 21 eyes). Twelve patients with cataracts (12 eyes) who underwent phacoemulsification combined with intraocular lens (IOL) implantation during the same period were recruited in the control group. The fibrovascular proliferation (FVP) grade and PDR severity scores were recorded during PPV. Enzyme-linked immunosorbent assay was used to detect the levels of VEGF, CTGF, and TNF-α in the aqueous humor. RESULTS (1) Young patients with PDR had a higher FVP grade and PDR severity score (P = 0.037, = 0.009); (2) The levels of the three cytokines in the study group were all significantly higher than in the control group (all P < 0.001); (3) The CTGF level in the young subgroup (2239.55 ± 167.32 pg/mL) was significantly higher than that in the senior subgroup (2114.49 ± 102.04 pg/mL) (P = 0.025). The VEGF level in the young subgroup (311.09 ± 10.74 pg/mL) was significantly lower than that in the senior subgroup (324.85 ± 14.97 pg/mL) (P = 0.004). The TNF-α level was not statistically different between the two subgroups (P = 0.382); (4) The CTGF/VEGF ratio in the young subgroup (7.20 ± 0.54) was significantly higher than in the senior subgroup (6.52 ± 0.39) (P < 0.001); (5) The CTGF/VEGF ratio was positively correlated with the FVP grades (R = 0.377, P = 0.022) and with the PDR severity scores (R = 0.354, P = 0.032) in patients with PDR. CONCLUSION The aqueous humor CTGF/VEGF ratio was positively correlated with the severity of PDR. A higher CTGF/VEGF ratio in the aqueous humor proved that neovascular fibrosis was more serious in young patients when they received PPV.
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Affiliation(s)
- Qi Zhao
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, 74676Tianjin Medical University Eye Hospital, Tianjin, China
| | - Weiting An
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, 74676Tianjin Medical University Eye Hospital, Tianjin, China
| | - Jindong Han
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, 74676Tianjin Medical University Eye Hospital, Tianjin, China
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Raman R, Ramasamy K, Shah U. A Paradigm Shift in the Management Approaches of Proliferative Diabetic Retinopathy: Role of Anti-VEGF Therapy. Clin Ophthalmol 2022; 16:3005-3017. [PMID: 36106093 PMCID: PMC9467443 DOI: 10.2147/opth.s374165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/22/2022] [Indexed: 11/23/2022] Open
Abstract
Diabetic retinopathy (DR) is considered one of the leading causes of vision loss globally. It principally causes upregulation of pro-angiogenic, proinflammatory, and vascular permeability factors such as vascular endothelial growth factor (VEGF), leading to neovascularisation. The advanced stage of DR or proliferative diabetic retinopathy (PDR) is of more concern, as it leads to vitreous haemorrhage and traction retinal detachment. Various risk factors associated with PDR include hyperglycemia, hypertension, neuropathy, dyslipidemia, anaemia, nephropathy, and retinal complications of drugs used for diabetes. Current management approaches for PDR have been stratified and involve pan-retinal photocoagulation, vitrectomy, and anti-VEGF agents. Given the emerging role of anti-VEGF agents as a favourable adjunct or alternative therapy, they have a critical role in the management of PDR. The review emphasises current management approaches for PDR focusing on anti-VEGF therapy. The review also highlights the risk/benefit evaluation of the various approaches employed for PDR management in various clinical scenarios.
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Affiliation(s)
- Rajiv Raman
- Shri Bhagwan Mahavir Vitreoretinal Services, Chennai, Tamil Nadu, India
- Correspondence: Rajiv Raman, Shri Bhagwan Mahavir Vitreoretinal Services, Chennai, Tamil Nadu, India, Tel +91-9444288708, Email
| | - Kim Ramasamy
- Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - Utkarsh Shah
- Novartis Healthcare Private Limited, Mumbai, India
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Li J, Li X, Lei M, Li W, Chen W, Ma T, Gao Y, Ye Z, Li Z. A prediction model for worsening diabetic retinopathy after panretinal photocoagulation. Diabetol Metab Syndr 2022; 14:124. [PMID: 36028852 PMCID: PMC9419399 DOI: 10.1186/s13098-022-00892-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/15/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND As one of the severe complications of diabetes mellitus, diabetic retinopathy (DR) is the leading cause of blindness in the working age worldwide. Although panretinal photocoagulation (PRP) was standard treatment, PRP-treated DR still has a high risk of progression. Hence, this study aimed to assess the risk factors and establish a model for predicting worsening diabetic retinopathy (DR-worsening) within five years after PRP. METHODS Patients who were diagnosed with severe non-proliferative diabetic retinopathy or proliferative diabetic retinopathy and treated with PRP were included, and those patients were randomly assigned to either a training or validation cohort. The multivariate logistic regression analysis was used to screen potential risk factors for DR-worsening in the training cohort. Then the model was established after including significant independent risk factors and further validated using discrimination and calibration. RESULTS A total of 271 patients were included, and 56.46% of patients had an outcome of DR-worsening. In the training cohort (n = 135), age (odds ratio [OR] = 0.94, 95% confidence interval [CI] 0.90-0.98), baseline best corrected visual acuity (logMAR) (OR = 10.74, 95% CI 1.84-62.52), diabetic nephropathy (OR = 9.32, 95% CI 1.49-58.46), and hyperlipidemia (OR = 3.34, 95% CI 1.05-10.66) were screened out as the independent risk factors, which were incorporated into the predictive model. The area under the receiver operating characteristic curve and calibration slope in the training and validation cohort were 0.79, 0.96 (95% CI 0.60-1.31), and 0.79, 1.00 (95% CI 0.66-1.34), respectively. Two risk groups were developed depending on the best cut-off value of the predicted probability, and the actual probability was 34.90% and 82.79% in the low-risk and high-risk groups, respectively (P < 0.001). CONCLUSIONS This study developed and internally validated a new model to predict the probability of DR-worsening after PRP treatment within five years. The model can be used as a rapid risk assessment system for clinical prediction of DR-worsening and identify individuals at a high risk of DR-worsening at an early stage and prescribe additional treatment.
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Affiliation(s)
- Jinglan Li
- Medical School of Chinese PLA, Beijing, China
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
| | - Xuanlong Li
- Medical School of Chinese PLA, Beijing, China
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
| | | | - Wanyue Li
- Medical School of Chinese PLA, Beijing, China
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
| | - Wenqian Chen
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
| | - Tianju Ma
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
| | - Yi Gao
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
| | - Zi Ye
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
| | - Zhaohui Li
- Department of Ophthalmology, The First Medical Centre, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, China
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Wang Q, Cai H, Xu D, Cui L, Zhang Y, Chen M. Pars plana vitrectomy assisted by intravitreal injection of conbercept enhances the therapeutic effect and quality of life in patients with severe proliferative diabetic retinopathy. Am J Transl Res 2022; 14:1324-1331. [PMID: 35273734 PMCID: PMC8902581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To explore the application value of intravitreal injection of Conbercept (IVC)-assisted pars plana vitrectomy (PPV) in patients with severe proliferative diabetic retinopathy (PDR). METHODS Forty-eight patients with severe PDR who underwent surgical treatment in Chongqing Aier Eye Hospital between October 2019 and June 2021 were retrospectively enrolled, and their clinical data were analyzed. Of them, 22 patients receiving PPV alone were assigned to the PPV group, and the remaining 26 patients treated with IVC-assisted PPV were included in the PPV+IVC group. The intra-operative indicators, postoperative complication rate, visual acuity (VA) improvement, and postoperative quality of life (QoL) were compared between the two groups. The levels of vascular endothelial growth factor (VEGF), placental growth factor (PIGF), and basic fibroblast growth factor (bFGF) in aqueous humor (AH) as well as serum contents of interleukin-6 (IL-6), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) were determined by Enzyme Linked Immunosorbent Assay (ELISA). RESULTS Compared to the PPV group, the operation time of the PPV+IVC group was significantly shorter, and the incidence of severe intraoperative blood loss (IBL), bipolar electrocoagulation hemostasis, iatrogenic retinal breaks (IRBs), postoperative silicone oil tamponade (SOT), and overall complications were significantly reduced. After surgery, the central macular thickness (CMT) was lower and the best corrected visual acuity (BCVA) assessed by the standard visual acuity chart and VA were significantly more improved in the PPV+IVC group versus the PPV group. After the use of Conbercept, the AH levels of VEGF, PIGF, and bFGF in the PPV+IVC group decreased and were significantly lower than those in the PPV group. The PPV+IVC group also showed lower serum levels of TNF-α, IL-6, and IL-1β than the PPV group. CONCLUSIONS IVC-assisted PPV can effectively reduce the difficulty of surgical treatment for PDR, better improve the postoperative VA of patients, and reduce inflammation with fewer complications.
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Affiliation(s)
- Qin Wang
- Chongqing Aier Eye HospitalChongqing 400020, Chongqing, China
| | - Hui Cai
- Department of Oncology, Fengdu People’s Hospital of ChongqingChongqing 408020, China
| | - Dahua Xu
- College of Eye Sciences, Central South UniversityChangsha 410015, Hunan, China
| | - Lin Cui
- Chongqing Aier Eye HospitalChongqing 400020, Chongqing, China
| | - Yan Zhang
- Department of Ophthalmology, Dazhou Central HospitalDazhou 635000, Sichuan, China
| | - Mei Chen
- Chongqing Aier Eye HospitalChongqing 400020, Chongqing, China
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Song Y, Zhou Z, Liu H, Du R, Zhou Y, Zhu S, Chen S. Tortuosity of branch retinal artery is more associated with the genesis and progress of diabetic retinopathy. Front Endocrinol (Lausanne) 2022; 13:972339. [PMID: 36277715 PMCID: PMC9582450 DOI: 10.3389/fendo.2022.972339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The purpose of this study is to investigate the potential of using the tortuosity of branch retinal artery as a more promising indicator for early detection and accurate assessment of diabetic retinopathy (DR). DESIGN AND METHOD The diagnoses, consisting of whether DR or not as well as DR severity, were given by ophthalmologists upon the assessment of those fundus images from 495 diabetic patients. Meanwhile, benefiting from those good contrast and high optical resolution fundus images taken by confocal scanning laser ophthalmoscope, the branch arteries, branch veins, main arteries and main veins in retina can be segmented independently, and the tortuosity values of them were further extracted to investigate their potential correlations with DR genesis and progress based on one-way ANOVA test. RESULTS For both two comparisons, i.e., between non-DR group and DR group as well as among groups with different DR severity levels, larger tortuosity increments were always observed in retinal arteries and the increments in branch retinal vessels were even larger. Furthermore, it was newly found that branch arterial tortuosity was significantly associated with both DR genesis (p=0.030) and DR progress (p<0.001). CONCLUSION Based on this cohort study of 495 diabetic patients without DR and with different DR severity, the branch arterial tortuosity has been found to be more closely associated with DR genesis as well as DR progress. Therefore, the branch arterial tortuosity is expected to be a more direct and specific indicator for early detection of DR as well as accurate assessment of DR severity, which can further guide timely and rational management of DR to prevent from visual impairment or even blindness resulting from DR.
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Affiliation(s)
- Yunfeng Song
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Zheng Zhou
- School of Innovation and Entrepreneurship, Liaoning Institute of Science and Technology, Benxi, China
| | - Henan Liu
- Department of Ophthalmology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Runyu Du
- Department of Endocrinology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Yaoyao Zhou
- School of Innovation and Entrepreneurship, Liaoning Institute of Science and Technology, Benxi, China
| | - Shanshan Zhu
- Research Institute for Medical and Biological Engineering, Ningbo University, Ningbo, China
- *Correspondence: Shanshan Zhu, ; Shuo Chen,
| | - Shuo Chen
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
- Key Laboratory of Intelligent Computing in Medical Image, Ministry of Education, Shenyang, China
- *Correspondence: Shanshan Zhu, ; Shuo Chen,
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Is Chronic Kidney Disease Affecting the Postoperative Complications of Vitrectomy for Proliferative Diabetic Retinopathy? J Clin Med 2021; 10:jcm10225309. [PMID: 34830589 PMCID: PMC8621452 DOI: 10.3390/jcm10225309] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/03/2021] [Accepted: 11/11/2021] [Indexed: 11/17/2022] Open
Abstract
Chronic kidney disease (CKD) is a well-known risk factor for postoperative complications in several surgical fields. However, although prevalent among diabetic candidates for vitrectomy, the effect of CKD on vitrectomy outcomes remains unclear. This study aimed at clarifying the relationship between CKD and the occurrence of vitrectomy-related complications in patients with proliferative diabetic retinopathy (PDR). The 6-month incidences of vitreous hemorrhage (VH) and neovascular glaucoma (NVG) following vitrectomy for PDR were compared among the following groups: stages 1–2 CKD (60 patients), stages 3–5 CKD (70 patients not on hemodialysis), and hemodialysis (HD; 30 patients). We also determined whether the deterioration of the estimated glomerular filtration rate (eGFR) was associated with post-vitrectomy events. The incidence of VH was significantly higher in the stages 3–5 CKD group (43%) than in the stages 1–2 CKD (10%) and HD (10%) groups. NVG was more common in the stages 3–5 CKD group (17%) than in the stages 1–2 CKD (2%) and HD (0%) groups. The reduced estimated glomerular filtration rate (eGFR) was the only significant variable associated with post-vitrectomy VH and NVG. Patients with PDR and CKD, particularly those with lower eGFR, might be at risk for post-vitrectomy VH and NVG.
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Tekchandani U, Dogra M. Commentary: Vitrectomy for proliferative diabetic retinopathy in patients with type 1 diabetes mellitus. Indian J Ophthalmol 2021; 69:3296. [PMID: 34708791 PMCID: PMC8725097 DOI: 10.4103/ijo.ijo_2655_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Uday Tekchandani
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Mohit Dogra
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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Kumar K, Baliga G, Babu N, Rajan RP, Kumar G, Mishra C, Chitra R, Ramasamy K. Clinical features and surgical outcomes of complications of proliferative diabetic retinopathy in young adults with type 1 diabetes mellitus versus type 2 diabetes mellitus - A comparative observational study. Indian J Ophthalmol 2021; 69:3289-3295. [PMID: 34708790 PMCID: PMC8725156 DOI: 10.4103/ijo.ijo_1293_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Purpose: To evaluate the clinical profile, visual outcomes, and complications among young adult patients with type 1 diabetes mellitus (insulin-dependent DM-T1DM) in comparison with patients with type 2 diabetes mellitus (T2DM) undergoing vitrectomy for complications of proliferative diabetic retinopathy (PDR). Methods: A retrospective review of patients between 18 and 45 years with T1DM undergoing vitrectomy for complications of PDR between June 2017 and June 2019, with a minimum follow-up of 12 months. Consecutive patients between 30 and 45 years with type 2 diabetes (non-insulin-dependent DM-T2DM) who underwent vitrectomy for the same indications were retrospectively enrolled as the control group. Results: There were 42 eyes (28 patients) in the T1DM group and 58 eyes (47 patients) in the T2DM group. The average age at operation was 35.9 ± 6.88 years and 39.8 ± 3.03 years, respectively (P < 0.001). At the end of follow-up, the mean logarithm of the minimum angle of resolution (logMAR) best-corrected visual acuity (BCVA) improved from 1.53 ± 0.55 to 1.30 ± 0.93 (P value 0.07) in the T1DM group and from 1.59 ± 0.46 to 1.00 ± 0.78 in the T2DM group (P = 0.0001). The rate of the primary and final reattachment was 76.2% and 88.1% in the T1DM group and 84.5% and 96.6% in the T2DM group. Preoperative macular tractional retinal detachment (MTRD) and neovascular glaucoma (NVG) in both the groups, chronic kidney disease (CKD) and lack of preoperative Pan retinal photocoagulation (PRP) in the T1DM group, hypertension (HTN) and, resurgery in the T2DM group, were risk factors for poor vision at the final follow-up. Conclusion: The visual and anatomic outcomes were poorer in the T1DM patients which could be due to the longer duration of diabetes with worse glycemic control, associated comorbidities like CKD, and a higher incidence of MTRD.
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Affiliation(s)
- Karthik Kumar
- Department of Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - Girish Baliga
- Department of Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - Naresh Babu
- Department of Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - Renu P Rajan
- Department of Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - Gautam Kumar
- Department of Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - Chitaranjan Mishra
- Department of Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - R Chitra
- Department of Biostatistics, Aravind Medical Research Foundation, Madurai, Tamil Nadu, India
| | - Kim Ramasamy
- Department of Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
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Berrocal MH, Acaba-Berrocal L. Early pars plana vitrectomy for proliferative diabetic retinopathy: update and review of current literature. Curr Opin Ophthalmol 2021; 32:203-208. [PMID: 33770016 DOI: 10.1097/icu.0000000000000760] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE OF REVIEW Diabetic retinopathy (DR) is one of the leading causes of preventable vision loss in the world and its prevalence continues to increase worldwide. One of the ultimate and visually impairing complications of DR is proliferative diabetic retinopathy (PDR) and subsequent tractional retinal detachment. Treatment modalities, surgical techniques, and a better understanding of the pathophysiology of DR and PDR continue to change the way we approach the disease. The goal of this review is to provide an update on recent treatment modalities and outcomes of proliferative diabetic retinopathy and its complications including tractional retinal detachment. RECENT FINDINGS Panretinal photocoagulation (PRP), anti-vascular endothelial growth factor (anti-VEGF), and pars plana vitrectomy are the mainstay of PDR treatment. However, PRP and anti-VEGF are associated with significant treatment burden and multiple subsequent treatments. Early vitrectomy is associated with vision preservation, less treatment burden, and less subsequent treatments than therapy with PRP and anti-VEGF. SUMMARY Concerning costs, high rates of noncompliance in the diabetic population and significant rates of subsequent treatments with initial PRP and anti-VEGF, early vitrectomy for diabetic retinopathy in patients at risk of PDR is a cost-effective long-term stabilizing treatment for diabetics with advanced disease.
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Affiliation(s)
| | - Luis Acaba-Berrocal
- Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, Illinois, USA
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