[The campimetric method for measuring the individually tolerated intraocular pressure (Ptl) in glaucoma (author's...

Standard values of the intraocular pressure, as an average result of mass examinations, need not be valid in the actual case. So the upper limit of the intraocular pressure for a hypertonic patient may be higher than in persons with arterial hypotonia. In order to achieve an individual approach A. M. Vodovozov introduced in 1975 the notion of tolerable intraocular pressure (Ptl) which may be determined by means of campimetry and perimetry, or using hemodynamic and electrophysiological methods. Here the campimetric method of determining the individually tolerable intraocular pressure (Ptl) is described. The size of the blind spot (namely the vertical diameter) and the pertinent intraocular pressure are measured several times (every half an hour), in the course of which the effect of an oral dose of glycerol combined with ascorbic acid is observed. That tonometric value which coincides with the minimal size of the blind spot is considered as the individually tolerable level of intraocular pressure. The campimetric investigation of 98 eyes in 52 glaucomatous patients showed that the tolerable intraocular pressure may be above as well as below the standard. This aids in ordering the appropriate treatment and in preventing the loss of ocular function in glaucomatous patients.