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Tolerant intraocular pressure and dynamics of visual functions in patients with primary open angle glaucoma

Poster Details

First Author: V.Fokin RUSSIA

Co Author(s):    S. Balalin              

Abstract Details



Purpose:

to study relationship between intolerance index (I int.), readings of ocular pulse and rapidity of glaucoma progression.

Setting:

The S.N. Fyodorov Eye Microsurgery Federal State Institution, Volgograd Branch

Methods:

there were examined 1310 patients with primary open-angle glaucoma (1638 eyes), receiving treatment for 2-7 years. All patients underwent static perimetry, ophthalmosphygmography, evaluation of their tolerant IOP (P0 tl) and intolerance index (I int=P0-P0 tl).

Results:

in cases of rapidly progressing glaucoma (38 eyes) I int exceeded 55 mm Hg (7,2ḟ0,2 mm Hg). In slow progressing glaucoma (74 eyes) I int was less than 5 mm Hg, its mean value equaled 2,6ḟ0,12 mm Hg. Stabilized glaucoma (1526 eyes) was characterized by I int averaging -1,5ḟ0,04 mm Hg. In 94,3 % of patients with POAG intolerance index was less than zero and was expressed by negative number – IOP level was lower than level of tolerant IOP. In 5,6 % of cases I Int was less than 2 mm Hg.

Conclusions:

progression of glaucoma was registered when IOP fluctuated above tolerant level. Value of intolerance index allows predicting dynamics of visual functions and rapidity of glaucoma progression.

Financial Disclosure:

NONE

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