Ocular tonometry

Ocular tonometry - measurement of intraocular pressure is important in the diagnosis of glaucoma (see). The most simple is the so-called finger tonometry. In this method investigating puts the ends of your index fingers on the upper eyelid first one then the other eye. Studied at that, looking down, not squeezing century. The ends of the fingers alternately slightly exert pressure on the eyeball. Get an impression about the density of the eye may be a rough description of the state of intraocular pressure.
More accurate measurement of intraocular pressure (see) is made by means of eye pressure monitors Maklakova.

ocular tonometry
Measurement of intraocular pressure tonometer Maklakova.

The device is a small cylinder weighing 10 g, all of which end with the sites of milk glass with a diameter of 10 mm Before the test site grease with a thin layer of special inks (bismarkian, kollargola, methylene blue). The study was conducted with the patient supine after preliminary instillation in kongungualny bag studied the eyes of 0.5% solution dikaina. With the bracket tonometer put on the cornea (Fig) and hold it upright for about 1 sec., then quickly removed. At the site of the tonometer in contact with the cornea turns a bright spot, which is printed on paper, slightly moistened with alcohol. This kind of impression is called fonogrammas, its size depends on the size of intraocular pressure: the higher the intraocular pressure, the less the area of the impression and received a circle, and Vice versa. There is a special line for translation of the diameter of the circle stamp in the amount of intraocular pressure in millimeters of mercury).
Ocular pressure monitors produced in the form of a set of monitors of different weight. Tonometry in eye offices usually spend nurse.