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¹Celal Bayar Üniversitesi Tıp Fakültesi, Göz Hastalıkları A.D., Manisa, Prof. Dr.
²Celal Bayar Üniversitesi Tıp Fakültesi, Göz Hastalıkları A.D., Manisa, Yrd. Doç. Dr.
³Celal Bayar Üniversitesi Tıp Fakültesi, Göz Hastalıkları A.D., Manisa, Uzm. Dr. Purpose: To assess the efficacy and safety of patterned scan (Pascal) grid laser teratment in diffuse diabetic macular edema.
Materials and Methods: Our study included 30 eyes of 25 patients with diffuse macular edema who were never treated before at our institution. All patients had detailed ophthalmologic examination at baseline and at 1, 3 and 6 months after treatment. Best corrected visual acuity (BCVA) was measured using Snellen chart and then converted to logMAR for statistical analysis. Macular thickness (MT) measurements were performed using spectral domain optical cohorence tomography at baseline and at every visit thereafter. Treatment was performed with Pascal system by using its specific grid pattern. Laser parameters and complications were recorded.
Results: The mean age of the patients was 57.8±5.6 years. BCVA was 0.63±0.38 (logMAR) at baseline and 0.68±0.47 at 1 month, 0.64±0.47 at 3 months and 0.66±0.47 at 6 months after the treatment. MT was 370±164 μm at baseline and 383±180 μm at 1 month, 374±191 μm at 3 months and 356±196 μm at 6 months after the treatment. There was no statistically significant difference in BCVA and MT before and after the treatment in all visits. There was no complications recorded.
Conclusion: Grid photocoagulation by the Pascal system is found to be safe in diffuse diabetic macular edema in short term follow up. BCVA and MT were maintained in all patients at the end of follow up. The efficacy of the treatment seems to be closely related with the metabolic control. Keywords : Diabetic retinopathy, macular edema, Pascal, patterned scan laser, photocoagulation