Tonometry is an examination, in which the intraocular pressure is measured. The intraocular pressure is a specific pressure on the eyeball. An excessively high intraocular pressure may cause damage to the retina or optic nerve. Tonometry is part of the standard examination done in case of eye problems.

Indication

Tonometry is widely used by the ophthalmologist and optician. Measuring the intraocular pressure is of particularly interest when glaucoma is suspected. An excessively high intraocular pressure may cause glaucoma. In the worst case, glaucoma leads to visual impairment or blindness.

Working

The doctor measures with the aid of an instrument whether the intraocular pressure is too high.

Procedure

There are several ways and instruments to measure the intraocular pressure:

The result of a tonometry is immediately known after measuring the intraocular pressure.

Facts