J Korean Ophthalmol Soc > Volume 50(5); 2009 > Article
Journal of the Korean Ophthalmological Society 2009;50(5):717-724.
DOI: https://doi.org/10.3341/jkos.2009.50.5.717    Published online May 15, 2009.
Macular Thickness and Visual Acuity Before and After Panretinal Photocoagulation in Severe Diabetic Retinopathy.
Sang Hoon Park, Su Jeong Song
Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. eye-su@hanmail.net
심한 당뇨망막병증에서 범망막광응고술 전 후 빛간섭단층촬영을 통한 시력과 황반두께 변화
박상훈ㆍ송수정
Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
Abstract
PURPOSE
To compare macular thickness and visual acuity before and after panretinal photocoagulation in patients with severe diabetic retinopathy without diabetic macular edema. METHODS: Macular thickness and visual acuity (LogMAR) of 40 eyes were compared before and after panretinal photocoagulation, for severe diabetic retinopathy. Macular thickness was measured by optical coherence tomography(OCT). In addition, changes in macular thickness and visual acuity were compared with the patient's level of HbA1c, blood pressure, and diabetic nephropathy. RESULTS: Mean visual acuity before and 1.47+/-0.80 months after panretinal photocoagulation were 0.28+/-0.23 and 0.33+/-0.27, respectively, which was not a significant decrease (p=0.131). However mean central macular thickness (216.98+/-34.09 microm to 255.22+/-73.40 microm), and mean peripheral macular thickness (269.26+/-34.59 microm to 291.96+/-46.49 microm) did increase significantly after panretinal photocoagulation (p=0.001). The decrease of mean visual acuity and increase of mean macular thickness were greater in patients with high blood glucose, high blood pressure and diabetic nephropathy. CONCLUSIONS: In eyes with severe diabetic retinopathy treated with panretinal photocoagulation, mean visual acuity did not decrease significantly, but mean central and peripheral macular thickness significantly increased after treatment. We posit that visual prognosis after panretinal photocoagulation in eyes with severe diabetic retinopathy without macular edema is influenced by the control of blood glucose and blood pressure and the presence of diabetic nephropathy.
Key Words: Diabetic Retinopathy;Macular Edema;Optical Coherence Tomography (OCT);PanRetinal Photocoagulation (PRP);Visual Acuity


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