Navigated Laser In Branch Retinal Vein Occlusion Study

Summary

Branch retinal vein occlusion (BRVO) is often complicated by macular edema, possibly leading to severe visual loss or blindness. Treatment is repeated, intravitreal injections of vascular endothelial growth factor (VEGF)-inhibitors like aflibercept. The treatment is effective, but a need for repetitive injections is a concern for patients as well as society due to risk of side effects, regular hospital visits and the price of the drug. Former treatment included macular grid pattern photocoagulation, but this technology was limited by a poorer visual outcome for the patient and a higher risk of side effects, including central visual loss. A novel laser delivery system, called navigated laser photocoagulation, has proven effective, safe and precise, and has shown promising results in stabilising the effect of the VEGF-inhibitor treatment in similar diseases. Thus, in a 12-month prospective, randomized 1:1 study of 60 patients with BRVO and macular edema the investigators aim to (1) Examine the treatment response of patients treated with intravitreal aflibercept (Eylea®) and navigated retinal laser (Navilas®)(Group 1) as compared to patients treated with intravitreal aflibercept only (Group 2), and (2) Identify non-invasive retinal biomarkers (retinal oxygen saturation, macular ischemia and retinal vascular arteriolar and venular calibre) for successful treatment outcome.

Timeline

Start

2018-08-10

Primary completion

2021-10-05

Completion

2021-10-05

Publications

• Background Argon laser scatter photocoagulation for prevention of neovascularization and vitreous hemorrhage in branch vein occlusion. A randomized clinical trial. Branch Vein Occlusion Study Group. Arch Ophthalmol. 1986 Jan;104(1):34-41. doi: 10.1001/archopht.1986.01050130044017.
• Background Brown DM, Campochiaro PA, Bhisitkul RB, Ho AC, Gray S, Saroj N, Adamis AP, Rubio RG, Murahashi WY. Sustained benefits from ranibizumab for macular edema following branch retinal vein occlusion: 12-month outcomes of a phase III study. Ophthalmology. 2011 Aug;118(8):1594-602. doi: 10.1016/j.ophtha.2011.02.022.
• Background Pielen A, Mirshahi A, Feltgen N, Lorenz K, Korb C, Junker B, Schaefer C, Zwiener I, Hattenbach LO; RABAMES Study Group. Ranibizumab for Branch Retinal Vein Occlusion Associated Macular Edema Study (RABAMES): six-month results of a prospective randomized clinical trial. Acta Ophthalmol. 2015 Feb;93(1):e29-37. doi: 10.1111/aos.12488. Epub 2014 Jul 8.
• Background Clark WL, Boyer DS, Heier JS, Brown DM, Haller JA, Vitti R, Kazmi H, Berliner AJ, Erickson K, Chu KW, Soo Y, Cheng Y, Campochiaro PA. Intravitreal Aflibercept for Macular Edema Following Branch Retinal Vein Occlusion: 52-Week Results of the VIBRANT Study. Ophthalmology. 2016 Feb;123(2):330-336. doi: 10.1016/j.ophtha.2015.09.035. Epub 2015 Oct 30.
• Background Klein R, Moss SE, Meuer SM, Klein BE. The 15-year cumulative incidence of retinal vein occlusion: the Beaver Dam Eye Study. Arch Ophthalmol. 2008 Apr;126(4):513-8. doi: 10.1001/archopht.126.4.513.
• Background Aiello LP, Avery RL, Arrigg PG, Keyt BA, Jampel HD, Shah ST, Pasquale LR, Thieme H, Iwamoto MA, Park JE, et al. Vascular endothelial growth factor in ocular fluid of patients with diabetic retinopathy and other retinal disorders. N Engl J Med. 1994 Dec 1;331(22):1480-7. doi: 10.1056/NEJM199412013312203.
• Background Noma H, Minamoto A, Funatsu H, Tsukamoto H, Nakano K, Yamashita H, Mishima HK. Intravitreal levels of vascular endothelial growth factor and interleukin-6 are correlated with macular edema in branch retinal vein occlusion. Graefes Arch Clin Exp Ophthalmol. 2006 Mar;244(3):309-15. doi: 10.1007/s00417-004-1087-4. Epub 2005 Aug 13.
• Background Geirsdottir A, Palsson O, Hardarson SH, Olafsdottir OB, Kristjansdottir JV, Stefansson E. Retinal vessel oxygen saturation in healthy individuals. Invest Ophthalmol Vis Sci. 2012 Aug 13;53(9):5433-42. doi: 10.1167/iovs.12-9912.
• Background Lin LL, Dong YM, Zong Y, Zheng QS, Fu Y, Yuan YG, Huang X, Qian G, Gao QY. Study of retinal vessel oxygen saturation in ischemic and non-ischemic branch retinal vein occlusion. Int J Ophthalmol. 2016 Feb 18;9(1):99-107. doi: 10.18240/ijo.2016.01.17. eCollection 2016.
• Background Hardarson SH, Stefansson E. Oxygen saturation in branch retinal vein occlusion. Acta Ophthalmol. 2012 Aug;90(5):466-70. doi: 10.1111/j.1755-3768.2011.02109.x. Epub 2011 Apr 21.
• Background Grauslund J, Hodgson L, Kawasaki R, Green A, Sjolie AK, Wong TY. Retinal vessel calibre and micro- and macrovascular complications in type 1 diabetes. Diabetologia. 2009 Oct;52(10):2213-7. doi: 10.1007/s00125-009-1459-8. Epub 2009 Jul 18.
• Background Broe R, Rasmussen ML, Frydkjaer-Olsen U, Olsen BS, Mortensen HB, Hodgson L, Wong TY, Peto T, Grauslund J. Retinal vessel calibers predict long-term microvascular complications in type 1 diabetes: the Danish Cohort of Pediatric Diabetes 1987 (DCPD1987). Diabetes. 2014 Nov;63(11):3906-14. doi: 10.2337/db14-0227. Epub 2014 Jun 9.
• Background Youm DJ, Ha MM, Chang Y, Song SJ. Retinal vessel caliber and risk factors for branch retinal vein occlusion. Curr Eye Res. 2012 Apr;37(4):334-8. doi: 10.3109/02713683.2011.629070. Epub 2012 Feb 10.
• Background Techniques for scatter and local photocoagulation treatment of diabetic retinopathy: Early Treatment Diabetic Retinopathy Study Report no. 3. The Early Treatment Diabetic Retinopathy Study Research Group. Int Ophthalmol Clin. 1987 Winter;27(4):254-64. doi: 10.1097/00004397-198702740-00005. No abstract available.
• Background Kozak I, Oster SF, Cortes MA, Dowell D, Hartmann K, Kim JS, Freeman WR. Clinical evaluation and treatment accuracy in diabetic macular edema using navigated laser photocoagulator NAVILAS. Ophthalmology. 2011 Jun;118(6):1119-24. doi: 10.1016/j.ophtha.2010.10.007. Epub 2011 Jan 26.
• Background Tomkins-Netzer O, Ismetova F, Bar A, Seguin-Greenstein S, Kramer M, Lightman S. Functional outcome of macular edema in different retinal disorders. Prog Retin Eye Res. 2015 Sep;48:119-36. doi: 10.1016/j.preteyeres.2015.05.002. Epub 2015 May 23.
• Background Liegl R, Langer J, Seidensticker F, Reznicek L, Haritoglou C, Ulbig MW, Neubauer AS, Kampik A, Kernt M. Comparative evaluation of combined navigated laser photocoagulation and intravitreal ranibizumab in the treatment of diabetic macular edema. PLoS One. 2014 Dec 26;9(12):e113981. doi: 10.1371/journal.pone.0113981. eCollection 2014.
• Frederiksen KH, Pedersen FN, Vergmann AS, Yang D, Laugesen CS, Vestergaard JP, Sorensen TL, Cheung CY, Kawasaki R, Peto T, Grauslund J. Predictive value of retinal oximetry, optical coherence tomography angiography and microperimetry in patients with treatment-naive branch retinal vein occlusion. Int J Retina Vitreous. 2023 Jun 28;9(1):38. doi: 10.1186/s40942-023-00468-7.

Drugs

Indications