Purpose: To highlight the etiopathogenic correlations between the changes of intraocular pressure (IOP) and the retinal venous occlusion (RVO).
Method: A prospective clinical study for a period of 2 years (01.01.2003-12.31.2004) that included two groups of patients: group A (31 patients) with POAG and group B (14 patients) with OHT, homogeneous concerning the repartition on groups of age, sex, associated systemic conditions. We have evaluated the incidence of RVO and its characteristics and the evolution of IOP. The data have been statistically analysed using the Wilcoxon test.
Results: In the A group we have recorded a significantly higher incidence of RVO comparing to the B group (p=0.0031). In most of the cases, the site of OVR in both groups has been localised at the optic nerve head and accompanied by the fall of IOP comparing to the fellow eye.
Conclusions: The rise of IOP represents an important risk factor for RVO, and particularly in the presence of other risk factors, the normalisation of IOP is necessary. The glaucomatous changes of optic nerve head have a major role in the apparition of this type of retinal vascular pathology. The changes of IOP can be "hidden" by the occurrence of RVO.
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