Saratov JOURNAL of Medical and Scientific Research

Analysis of the coagulates intensity in laser treatment of diabetic macular edema in a Navilas robotic laser system

Year: 2017, volume 13 Issue: №2 Pages: 375-378
Heading: Ophtalmology Article type: Original article
Authors: Zamytskiy Е.А., Zolotarev A.V., Karlova E.V., Zamytskiy P.A.
Organization: Samara Regional Clinical Ophthalmological Hospital n.a. T. I. Broshevskiy, Samara State Medical University

The aim ofthisworkwasto analyze the intensity of the laser coagulates in the treatment of diabetic macular edema conducted in navigation mode on robotic laser system Navilas. Material and Methods. Retrospective analysis of outpatient cards and photographs of the fundus 20 patients (28 eyes) had been done. The patients had type II diabetes mellitus. We performed laser treatment of diabetic macular edema. There were evaluated 4260 coagulates, of which 0 degree 2166 (50.85%), I degree —525 (12.32%), II degree —747 (15.74%), III degree—498 (11.96%), grade IV — 324 (7.6 per cent). Result. The thickness of the retina before treatment in the area of edema was made 339.72±45.3 urn, and after treatment 346±70 urn, student's t-test 0.7124, a difference of 6.5±57.4. Visual acuity before treatment 0.532±0.3, after— 0.521±0.3mm, student's t-test 0,889. Conclusion. The facts obtained in the analysis suggests that the algorithm of selection of power and the way it adjustments in the course of treatment are the weak point of this technique. Development of new methods, giving the possibility to adjust the power depending on the height of the swelling region of the retina, thereby gaining coagulates strictly necessary for the specific case of intensity, will enable to increase the efficiency and safety of laser treatment.

1. Whiting DR, Guariguata L, Weil C, et al. IDF diabetes atlas: global estimates of the prevalence of diabetes for 2011 and 2030. Diabetes Res Clin Pract 2011; 94 (3): 311 -321
2. IDF atlas (7th edition update)). Brussels, Belgium; International Diabetes Federation, 2015. URL: (04.04.2017)
3. Bourne RR, Stevens GA, White RA, et al. Causes of vision loss worldwide, 1990-2010: a systematic analysis. Lancet Glob Health 2013; 1 (6): 339-4
4. Balashevich LI, IzmaylovAS. Diabetic ophthalmopathy, St. Petersburg: Chelovek, 2012; 336 p.
5. Yau JW, Rogers SL, Kawasaki R, et al. Global prevalence and major risk factors of diabetic retinopathy. Diabetes Care 2012; 35(3): 556-64
6. Astakhov YuS, Shadrichev FE, Krasavina Ml, Grigorieva NN. Modern approaches to the treatment of diabetic macular edema. Ophthalmology statements 2009; (4): 59-69
7. Early Treatment Diabetic Retinopathy Study Research Group. Photocoagulation for diabetic macular edema. Early Treatment Diabetic Retinopathy Study Report Number 1. Arch Ophthalmol1985; 103(12)
8. Moss SE, Klein R, Klein BE. The incidence of vision loss in a diabetic population. Ophthalmology 1988; (95): 1340-1348
9. Oik RJ, Lee CM. Management of diabetic macular edema. In: XV Interamerican Course in Clinical Ophthalmology. Miami, Florida, USA: Bascom Palmer Eye Institute, 1993; p. 44-77
10. Astakhov YuS, Shadrichev FE, Lisochkina AB. Laser photocoagulation of the retina in the treatment of diabetic retinopathy. Clinical Ophthalmology 2000; (1): 15.

2017_02-1_375-378.pdf265.71 KB

No votes yet