Measuring ocular tension.

Tonometry is a procedure whereby intraocular pressure can be measured. Using this method, we can detect glaucoma , a disease in which the pressure inside the eye increases to the point that vision is altered and if left untreated can lead to blindness.

There exist various methods for measuring intraocular pressure , among which we can highlight flattening (which measures the strength required to flatten the cornea) or the contactless method ( air puff ), although they all have the same objective, to measure ocular pressure. Of the two mentioned, the most precise and reliable is the flattening method, using a slit lamp (with a blue light on the eye ) and with Goldman tonometry , or alternatively, the Tono-pen , which is a hand-held device which is very easy to use.