The uveal venous pressure is difficult to measure in most species and, consequently, it has been a matter of considerable speculation and disagreement. Some investigators7,8 assumed that under normal conditions the pressure in the proximal part of the uveal veins UVP, is just high enough to prevent collapse of the vessels, while others9,10 claimed that it is considerably higher.
An increase in intraocular pressure, IOP, from the normal level, was considered by Kiss6 to produce such a compression of the narrow intrascleral part of the vortex veins as to cause a serious uveal venous stasis. Seidel,8 on the other hand, assumed that the UVP was raised just enough to balance the IOP.
In a previous paper1 I demonstrated by indirect means that, in rabbits, the UVP is just above the IOP at normal and high IOP's and that the resistance in the veins draining the
BILL A. The Uveal Venous Pressure. Arch Ophthalmol. 1963;69(6):780–782. doi:10.1001/archopht.1963.00960040786021
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