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Innovative Diaton Scleral Tonometer at Optometry’s Meeting in Denver Colorado.

Besides standard qualities of corneal tonometers, Diaton is able to measure intraocular pressure (IOP) via sclera, which us useful to be used on patients that are indicated to wear scleral lenses. Measuring IOP in patients with scleral lenses is becoming a standard of care. Diaton is unique and is only tonometry device on the market that is trans-scleral as well as trans-palpebral.

A recent clinical study by Pacific University College of Optometry, titled “Does IOP Increase During Scleral Lens Wear? ”  Concerns have been raised about potential unintended long term side effects of scleral lens wear. One of these side effects is a potential change in intraocular pressure (IOP).

Study Results: The Diaton measures IOP through the upper eyelid to the scleral surface. This allows clinicians to monitor IOP while scleral lenses are being worn. The correlation between IOP measurements taken with the Diaton and Goldmann were significant. 73.2% of observed Goldmann values fell within ±2 mmHg of the predicted Goldmann values predicted by our linear regression model. Immediately following lens application, IOP increased (above baseline) in all subjects in both lens designs A and B. The increase in IOP was not significantly different between the two lens designs. The average increase in IOP for both lens designs was 5.5 mmHg.

Discussion: We observed that immediately following scleral lens application, the IOP increased in all of the test subjects. The initial IOP increase averaged 5.5 mmHg. The pressure appears to remain elevated throughout the wearing time (average 7.0 mmHg increase from baseline prior to removal), then immediately returns to baseline following scleral lens removal. This suggests that the suction force beneath the lens is a primary contributor to the IOP changes. These suction forces may also be responsible for such phenomenon as conjunctival prolapse. However, narrowing of the iridocorneal angle or compression of the trabecular meshwork and/or Schlemm’s canal due to the suction of the lens can not be ruled out as possible contributing factors to the IOP changes. Please see the poster for details and graphs.

Diaton is featured at Optometry’s Meeting 2018 American Optometric Association AOA

More about Diaton can be found at

About the American Optometric Association (AOA)

The American Optometric Association is the leading authority on quality care and an advocate for our nation’s health, representing more than 44,000 doctors of optometry (O.D.), optometric professionals and optometry students. Doctors of optometry take a leading role in patient care with respect to eye and vision care, as well as general health and well-being. As primary health care providers, doctors of optometry have extensive, ongoing training to examine, diagnose, treat and manage ocular disorders, diseases and injuries and systemic diseases that manifest in the eye. Doctors of optometry provide more than two-thirds of primary eye care in the U.S.

About Diaton tonometer – Unique through the Eyelid tonometer which allows to diagnose intraocular pressure for glaucoma by only touching the upper eyelid overlaying sclera. Quick, Painless, Non-invasive. More details at