Retinal blood flow in diabetic children and adolescents.
A total of 209 diabetic children and adolescents aged 6-17 years (mean, 12.6 +/- 2.3 years) were examined by ophthalmoscopy, video fluorescein angiography and hemoglobin (HbA1c) test. Microaneurysms were found in 26% of the children (ophthalmoscopy, 11%; angiography, 23%). The prevalence of retinopathy was 16% in patients aged 6-10 years, 27% in those aged 11-13 years and 36% in those aged 14-17 years. Only five diabetics aged 11-17 years showed lesions other than microaneurysms (hard exudates, intraretinal hemorrhages or retinal capillar leakage). Retinal blood flow was quantified using video fluorescein angiography. The arm-retina time (ART) and the arteriovenous passage time (AVP) as parameters of the retinal microcirculation were obtained using an image analysing system. The mean value for ART was 9.7 +/- 2.5 s and that for AVP was 1.43 +/- 0.52 s. AVP was significantly shorter in diabetic children and adolescents with good glycemic control (HbA1c, less than 7%; AVP, 1.35 +/- 0.44 s) than in those with bad glycemic control (HbA1c, greater than or equal to 9%; AVP, 1.65 +/- 0.51 s).
Bertram
B
B
Augenklinik RWTH Aachen, Federal Republic of Germany.
Wolf
S
S
Schulte
K
K
Jung
F
F
Kiesewetter
H
H
Sitzmann
F C
FC
Reim
M
M
D000293:Adolescent; D000783:Aneurysm / Q000175:diagnosis; D001783:Blood Flow Velocity; D002648:Child; D003922:Diabetes Mellitus, Type 1 / Q000503:physiopathology*; D003930:Diabetic Retinopathy / Q000175:diagnosis / Q000503:physiopathology*; D005260:Female; D005451:Fluorescein Angiography; D006442:Glycated Hemoglobin / Q000032:analysis; D006801:Humans; D008297:Male; D012164:Retinal Diseases / Q000175:diagnosis; D012171:Retinal Vessels / Q000503:physiopathology*; D014741:Video Recording
D006442:Glycated Hemoglobin