Eye Pressure Measurement

Understanding the Importance of Tonometers in Eye Pressure Measurement

The non pigmented ciliary epithelium in the eye produces fluid known as Aqueous humor. The function of aqueous humor is to provide nourishment to the lens, the cornea, and the trabecular meshwork. The equilibrium between the amount of aqueous humor reduced and the amount of humor drained creates pressure in the eye, and this eye pressure is termed intraocular pressure (IOP).

Individuals with high levels of IOP show the symptoms of early onset of Glaucoma, whereas reduced levels of IOP lead to delay or altogether prevent the occurrence of Glaucoma. Study shows that IOP is a crucial factor in measurement development or versioning of the condition of Glaucoma.

Therefore, regular and accurate measurement of IOP is imperative for monitoring Glaucoma and therapy for a patient.

Further, tonometry occurs to be a crucial component of regular ophthalmological examinations. In this article, let’s dig in and learn more about the usage of tonometers in the measurement of eye pressure to treat diseases such as Glaucoma and their beneficial effects.

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History and evolution of Tonometry

The emphasis on the importance of the study of eye pressure and eye pressure measurement by tonometers was made by Sir William Bowman in 1826 led to the evolution of tonometers. After that, tonometry has been a crucial clinical skill to be mastered by all ophthalmologists.

Grafe is credited for creating the first mechanical instrument to measure IOP in the early 1860s. He was succeeded by Donders, who came up with the advanced version of mechanical tonometers in the mid-1860s.

The first successful version of the meter, which was easy to use and was of a high precision level, was introduced by Hjalmar Schiotz in the 1900s. It helps immensely in the undiscovered facts about the condition of Glaucoma. Later, an adjustment was introduced for ocular rigidity by Goldmann in the 1950s.

All the modern equipment in the industry of Tonometer for eye pressure measurement is based on the principles introduced by the early scientists – Maklakoff, Goldmann, and Schiotz.

Who poses a higher risk of Glaucoma?

The aqueous humor in the eye is constantly produced and trained if the draining system gets clogged. The fluid starts to build up, which causes the pressure in the eyes to rise. This condition leads to a high level of intraocular pressure (IOP). Tonometers are used to keep a check on the levels of eye pressure.

The buildup of fluid can be induced by an injury or accident. For most people, everything goes back to normal once the healing process is complete. But if the condition stays persistent for a long time, high intraocular pressure levels can damage the optic nerve, sending hinder signals to the brain, and lead to a state of loss of vision or Glaucoma.

Therefore regular eye care is done by tonometer tests. The people who pose a higher risk of getting Glaucoma are:

  • of age above 40
  • They are nearsighted or farsighted
  • They suffer from migraine
  • They suffer from diabetes
  • Have blood flow or circulation issues.

How do Tonometers Help in the Treatment of Glaucoma?

Eye pressure varies from person to person. According to the standards, it should come within 12 mmHg to 22 mmHg. Upon eye pressure measurement by tonometer, people diagnosed with Glaucoma show above 20 mmHg.

If in a tonometry test, the level of eye pressure is high, but the condition of optic nerves is stable, it is known as ocular hypertension. It implies that an individual does not have any symptoms but can change into Glaucoma over time.

Tonometers are professionals’ go-to for keeping track of changes in the level of eye pressure. It helps them analyze and diagnose the patient’s condition conveniently without much discomfort to the patient. Conducting regular eye pressure measurements aids in detecting the condition of Glaucoma in the early period. If the condition is diagnosed early, it can be treated before the damage occurs permanently.

Easyton Tonometers from Almagia International brings the precision of readings to the next level. Visit the website at Almagia International to learn more about it and order yours today!

Furthermore, it provides the IOP measurement without touching the cornea or having direct eye contact, and only the disinfected tip of the measuring rod touches the patient’s eyelid. EASYTON Tonometer does not create an airstream for measurements. Instead, it measures IOP by vibration through the eyelid to calculate the most accurate eye pressure.


Glaucoma is when the optic nerve is gradually damaged with time and age leading to complete vision loss. This condition is related to the level of intraocular pressure in the eye.

Overall, tonometers aid in identifying elevated levels of eye pressure with a regular medical examination and allow the medical professionals to diagnose the condition early and prevent complete loss of vision. Visit the website at Almagia International https://almagia.com/ to order the highly precise Easyton Tonometers today!

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