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Purpose: To determine the prevalence of diabetic retinopathy and the causes of visual impairment in an unselected population of type 2 diabetes patients, and to describe the risk factors for developing diabetic retinopathy in this populat ion. Methods: A total of 10851 type 2 diabetes patients were identified in the c ounty of úrhus. A representative sample of 378 patients underwent a routine ocu lar examination, including fundus photography. Blood pressure and serum haemoglo bin A1c, total cholesterol, high density lipoprotein cholesterol, triglyceride a nd apolipoprotein a were measured. Results: The prevalence of diabetic retinopat hy in the type 2 diabetes population was 31.5%. In all, 2.9%had proliferative diabetic retinopathy and 5.3%had clinically significant macular oedema. Of the latter, 8/20 (40%) were newly identified and had not yet been lasertreated. The re was a positive correlation between severity of retinopathy and duration of di abetes, HbA1c, systolic blood pressure and treatment with insulin. None of the p atients had social blindness (visual acuity< 0.1), but 15/378 (4.0%) had develo ped visual impairment (VA < 0.3). Conclusion: The prevalence of diabetic retinop athy and visual impairment in this unselected type 2 diabetes population was low er than anticipated from the existing literature,and causes other than diabetic retinopathy contributed significantly to the occurrence of visual loss. A substa ntial number of the patients with vision-threatening diabetic maculopathy had n ot been referred for timely photocoagulation treatment.
Purpose: To determine the prevalence of diabetic retinopathy and the causes of visual impairment in an unselected population of type 2 diabetes patients, and to describe the risk factors for developing diabetic retinopathy in this populat ion. Methods: A total of 10851 type 2 diabetes patients were identified in the county of úrhus. A representative sample of 378 patients underwent a routine ocu lar examination, including fundus photography. Blood pressure and serum hemoglobin bin A1c, total cholesterol, high density lipoprotein cholesterol, triglyceride a nd apolipoprotein a were measured. Results: The prevalence of diabetic retinopat hy in the type 2 diabetes population was 31.5%. In all, 2.9% had proliferative diabetic retinopathy and 5.3% had clinically significant macular odema. Of the latter, 8/20 (40%) were newly identified and had not yet been lasertreated. The re was a positive correlation between severity of retinopathy and duration of di abetes, HbA1c, systolic blood pressure None of the pients had social blindness (visual acuity <0.1), but 15/378 (4.0%) had develo ped visual impairment (VA <0.3). Conclusion: The prevalence of diabetic retinopathy and visual impairment in this unselected type 2 diabetes population was low er than anticipated from the existing literature, and causes other than diabetic retinopathy contributed significantly to the occurrence of visual loss. A substa ntial number of the patients with vision-threatening diabetic maculopathy had n ot been referred for timely photocoagulation treatment.