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Abstract #6407 Published in IGR 3-2
Factors affecting pulsatile ocular blood flow in normal subjects
Mori F; Konno S; Hikichi T; Yamaguchi Y; Ishiko S; Yoshida ABritish Journal of Ophthalmology 2001; 85: 529-530
BACKGROUND: The factors that influence pulsatile ocular blood flow (POBF) were evaluated in normal subjects. METHODS: POBF was measured in 80 normal subjects using Langham OBF computerized tonometry. The effect of age, systolic and diastolic blood pressure, refractive error, intraocular pressure, and axial length on POBF was evaluated using multiple regression analysis. RESULTS: The mean (SD) POBF value was 593.3 (203.6) μl/min (range, 290.7-1201.6). Of all the independent variables in the model, only the axial length was statistically significant (p = 0.008). The regression coefficient was negative, indicating that the axial length decreased with increasing POBF. CONCLUSIONS: These data suggest that, in normal subjects, POBF decreases as axial length increases. Choroidal blood flow may decrease as the axial length increases. The axial length may therefore be a major factor affecting POBF.
Dr F. Mori, Department of Ophthalmology, Asahikawa Medical College, Midorigaoka Higashi 2-1-1-1, Ashahikawa 078-8510, Japan. morinao@d5.dion.ne.jp
Classification:
6.11 Bloodflow measurements (Part of: 6 Clinical examination methods)