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2. Ocular tonometry - Wikipedia

   en.wikipedia.org/wiki/Ocular_tonometry

   The tonometer tip rests on the cornea with a constant appositional force of one gram. When the sensor is subjected to a change in pressure, the electrical resistance is altered and the tonometer's computer calculates a change in pressure according to the change in resistance. A complete measurement cycle requires about eight seconds of contact ...

3. Goldmann Applanation Tonometer - Wikipedia

   en.wikipedia.org/wiki/Goldmann_Applanation_Tonometer

   Goldmann Applanation Tonometer attached with Slit lamp biomicroscope Goldmann Applanation Tonometer is an instrument that is based on Imbert-Fick law . It is considered to be the gold standard instrument for measurement of Intraocular pressure (IOP).

4. Intraocular pressure - Wikipedia

   en.wikipedia.org/wiki/Intraocular_pressure

   A patient in front of a tonometer. Intraocular pressure (IOP) is the fluid pressure inside the eye. Tonometry is the method eye care professionals use to determine this. IOP is an important aspect in the evaluation of patients at risk of glaucoma. [1] Most tonometers are calibrated to measure pressure in millimeters of mercury .

5. Schiøtz tonometer - Wikipedia

   en.wikipedia.org/wiki/Schiøtz_tonometer

   The Schiotz tonometer consists of a curved footplate which is placed on the cornea of a supine patient. A weighted plunger attached to the footplate sinks into the cornea. A scale then gives a reading depending on how much the plunger sinks into the cornea, and a conversion table converts the scale reading into IOP measured in mmHg.

6. AOL-reviewed: The Renpho eye massager has almost 17,000 five ...

   www.aol.com/lifestyle/renpho-eyeris-review...

   You are also able to adjust the compression strength between no pressure, soft pressure and strong pressure. The brand advises removing eyeglasses, contact lenses and false eyelashes before using ...

7. Imbert-Fick law - Wikipedia

   en.wikipedia.org/wiki/Imbert-Fick_law

   Armand Imbert (1850-1922) and Adolf Fick (1829-1901) both demonstrated, independently of each other, that in ocular tonometry the tension of the wall can be neutralized when the application of the tonometer produces a flat surface instead of a convex one, and the reading of the tonometer (P) then equals (T) the IOP," whence all forces cancel each other.