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O.G. Shilova, I. Zapuskalov, A. Ekimov, A. Fetisov; Method Of Sparing Transpupillar Argon Laser Coagulation In Patients With Diabetic Retinopathy . Invest. Ophthalmol. Vis. Sci. 2004;45(13):4152.
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Purpose: Development and application in clinic of the method of sparing transpupillar argon laser coagulation of the retina in patients with diabetic retinopathy. Methods: Visometry, slit–lamp biomicroscopy, ophthalmoscopy, and fluorescein angiography of ocular fundus. After medical pupillar dilatation transpupillar argon laser coagulation has been performed by means of using green spectral radiation consistency of ophthalmological argon laser VISUALS–2 OPTON. Coagulates were plotted through either panfundus lens or three–mirror Goldman’s lens after previous superficial local anesthesia achieved by installing of 0.5% dicaine solution into conjunctival cavity. First step of the procedure included focal laser coagulation of macular area with plotting latter shaped as a shoe opened towards optic nerve head. Distance between coagulates and fovea centralis did not exceed 2500 mic. Chosen power was 140–300 mV, exposition time – 0.04–0.2 sec, spot diameter – 100 mic, coagulates count – 20–30, laser regime – single photoflashes. Focal coagulation was followed by scattered panretinal coagulation in automatic laser’s regime. Area of papillomacular bundle was always left untouched. Totally 400–450 coagulates were plotted 1500 mic away from each other. Results: Stabilization of retinopathy and significant delay of development of proliferative retinopathy, regression of macular microaneurisms and hemorrhages, reduce of risk of neovascularization and statistic increase of percentage of prolonged visual acuity kept have been registered. Conclusions: Opportune sparing laser surgery allows decreasing probability of retinopathy progression and stabilizing visual acuity at initial level. Application of sparing laser coagulation is pronouncedly effective in early stages of diabetic retinopathy.
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