True tolerant intraocular pressure in glaucoma, ocular hypertension and low-tension glaucoma

Measurements of the true tolerant intraocular pressure (IOP) in 500 eyes of 384 patients with primary glaucoma and in 26 eyes of 13 patients with ophthalmic hypertension have demonstrated that the value of the true tolerant 10P is close to the lowest border of the mean statistical range of normal ophthalmic tone values, this value being, on an average, 13.4 mm Hg in primary glaucoma and 10.2 mm Hg in low-pressure glaucoma, whereas in ophthalmic hypertension it has been much higher - 24.8 mm Hg. The intolerance index in stabilized glaucoma does not surpass 4 mm Hg with both the true and the tonometric 10P.