Intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema

Background/Aim. Within diabetic retinopathy (DR), diabetic macular edema (DME) is one of the leading causes of the loss of visual acuity. The aim of this study was to determine the efficacy of the intravitreal vascular endothelial growth factor (VEGF) inhibitor application alone or combined...

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Main Authors: Jovanović Sandra, Čanadanović Vladimir, Sabo Ana, Grgić Zorka, Mitrović Milena, Rakić Dušan
Format: Article
Language:English
Published: Military Health Department, Ministry of Defance, Serbia 2015-01-01
Series:Vojnosanitetski Pregled
Subjects:
Online Access:http://www.doiserbia.nb.rs/img/doi/0042-8450/2015/0042-84501500074J.pdf
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author Jovanović Sandra
Čanadanović Vladimir
Sabo Ana
Grgić Zorka
Mitrović Milena
Rakić Dušan
author_facet Jovanović Sandra
Čanadanović Vladimir
Sabo Ana
Grgić Zorka
Mitrović Milena
Rakić Dušan
author_sort Jovanović Sandra
collection DOAJ
description Background/Aim. Within diabetic retinopathy (DR), diabetic macular edema (DME) is one of the leading causes of the loss of visual acuity. The aim of this study was to determine the efficacy of the intravitreal vascular endothelial growth factor (VEGF) inhibitor application alone or combined with macular focal/grid lasephotocoagulation compared with laser treatment alone. Methods. This prospective randomized clinical trial included 72 patients (120 treated eyes) with varying degrees of DR and DME. The DME treatment included intravitreal VEGF inhibitor bevacizumab (Avastin®) application, with and without laser treatment. Bevacizumab (1.25 mg/0.05 mL) was administered intravitreally in 4-6-week intervals. Laser is applied 4-6 weeks after last dose of the drug as a part of combined treatment, or as the primary treatment. Results. The mean reduction in central macular thickness (CMT) for the eyes (n = 31) treated with bevacizumab alone was 162.23 μm, for the eyes (n = 53) treated with combined treatment the mean reduction in CMT was 124.24 μm, both statistically significant at p < 0.001. Laser macular photocolagulation as a part of combined treatment (in 53 eyes) significantly contributed to the CMT reduction, based on the paired t-test results (366.28 vs 323.0 μm at p < 0.05). In our study, the mean visual acuity improvement of 0.161 logMAR was achieved in the group of eyes treated with bevacizumab alone, and 0.093 logMAR in the group with combined treatment, both statistically significant at p < 0.05. The effect of laser photocolagulation alone on visual acuity and CMT was not statistically significant. Conclusion. Treatment with bevacizumab alone or within combined treatment is more effective in treating DME than conventional macular laser treatment alone, both anatomically and functionally.
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spelling doaj.art-5956c891752847ab9274d42cf52a9aeb2022-12-22T00:26:57ZengMilitary Health Department, Ministry of Defance, SerbiaVojnosanitetski Pregled0042-84502406-07202015-01-01721087688210.2298/VSP140402074J0042-84501500074JIntravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edemaJovanović Sandra0Čanadanović Vladimir1Sabo Ana2Grgić Zorka3Mitrović Milena4Rakić Dušan5University of Novi Sad, Faculty of Medicine, Clinical Center of Vojvodina, Clinic for Eye Diseases, Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Medicine, Clinical Center of Vojvodina, Clinic for Eye Diseases, Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Medicine, Department of Pharmacology, Toxicology and Clinical Pharmacology, Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Medicine, Clinical Center of Vojvodina, Clinic for Eye Diseases, Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Medicine, Clinical Center of Vojvodina, Endocrinology, Diabetes and Metabolic Disorders Clinic, Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Technology, Department of Mathematics, Novi Sad, SerbiaBackground/Aim. Within diabetic retinopathy (DR), diabetic macular edema (DME) is one of the leading causes of the loss of visual acuity. The aim of this study was to determine the efficacy of the intravitreal vascular endothelial growth factor (VEGF) inhibitor application alone or combined with macular focal/grid lasephotocoagulation compared with laser treatment alone. Methods. This prospective randomized clinical trial included 72 patients (120 treated eyes) with varying degrees of DR and DME. The DME treatment included intravitreal VEGF inhibitor bevacizumab (Avastin®) application, with and without laser treatment. Bevacizumab (1.25 mg/0.05 mL) was administered intravitreally in 4-6-week intervals. Laser is applied 4-6 weeks after last dose of the drug as a part of combined treatment, or as the primary treatment. Results. The mean reduction in central macular thickness (CMT) for the eyes (n = 31) treated with bevacizumab alone was 162.23 μm, for the eyes (n = 53) treated with combined treatment the mean reduction in CMT was 124.24 μm, both statistically significant at p < 0.001. Laser macular photocolagulation as a part of combined treatment (in 53 eyes) significantly contributed to the CMT reduction, based on the paired t-test results (366.28 vs 323.0 μm at p < 0.05). In our study, the mean visual acuity improvement of 0.161 logMAR was achieved in the group of eyes treated with bevacizumab alone, and 0.093 logMAR in the group with combined treatment, both statistically significant at p < 0.05. The effect of laser photocolagulation alone on visual acuity and CMT was not statistically significant. Conclusion. Treatment with bevacizumab alone or within combined treatment is more effective in treating DME than conventional macular laser treatment alone, both anatomically and functionally.http://www.doiserbia.nb.rs/img/doi/0042-8450/2015/0042-84501500074J.pdfdiabetic retinopathymacular edemaophthalmologic surgical proceduresvascular endothelial growth factorslight coagulationtreatment outcome
spellingShingle Jovanović Sandra
Čanadanović Vladimir
Sabo Ana
Grgić Zorka
Mitrović Milena
Rakić Dušan
Intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema
Vojnosanitetski Pregled
diabetic retinopathy
macular edema
ophthalmologic surgical procedures
vascular endothelial growth factors
light coagulation
treatment outcome
title Intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema
title_full Intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema
title_fullStr Intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema
title_full_unstemmed Intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema
title_short Intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema
title_sort intravitreal bevacizumab injection alone or combined with macular photocoagulation compared to macular photocoagulation as primary treatment of diabetic macular edema
topic diabetic retinopathy
macular edema
ophthalmologic surgical procedures
vascular endothelial growth factors
light coagulation
treatment outcome
url http://www.doiserbia.nb.rs/img/doi/0042-8450/2015/0042-84501500074J.pdf
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