Retinal hemodynamics in @entity1 with chronic XXXX .

@entity1 @entity1831 @entity1538 @entity72877 @entity2479 @entity16 @entity2790 @entity941
Recently it has been demonstrated that retinal hemodynamics are disturbed in @entity1 with chronic @entity1538 . As the underlying cause a reduction in perfusion pressure due to @entity2790 (IOP) and @entity2479 has been discussed. The present study was undertaken to clarify the influence of filtering surgery on retinal hemodynamics in @entity1 with chronic @entity1538 . A total of 17 @entity1 with chronic @entity1538 aged between 37 and 86 years were included in this prospective study. All @entity1 underwent digital @entity941 angiography before and 10 days after fistulating procedures. From the angiograms the arteriovenous passage time ( @entity1831 ) and arterial mean dye-bolus velocity (MDV) were quantified by means of digital picture analysis. At baseline the @entity1831 was significantly prolonged in the @entity1 as compared with reference values ( @entity1831 , 2.5 +/- 0.8 versus 1.6 +/- 0.4 s; P < 0.01). After the fistulating procedure (IOP: before, 29 +/- 5 mmHg; after, 16 +/- 4 mmHg) the @entity1831 was significantly reduced as compared with baseline values ( @entity1831 , 2.5 +/- 0.8 versus 2.0 +/- 0.4 s; P < 0.05), whereas the MDV showed only a slight increase ( @entity72877 .70 +/- 0.89 versus 5.99 +/- 0.92 mm/s; P > 0.05). This study confirms a disturbance of retinal hemodynamics in @entity1 with chronic @entity1538 . The significant reduction in @entity1831 observed after lowering of the IOP by fistulating procedures demonstrates the positive influence of IOP reduction on the retinal circulation. The improvement in retinal circulation may prevent the occurrence of further @entity16 after fistulating procedures.
