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Goldmann applanation tonometry is a clinical test that measures intraocular pressure (IOP). It helps detect glaucoma by assessing how much force is required to flatten a small part of the cornea. The test is widely used for its accuracy and consistency.
read more about Goldmann applanation tonometry ...The procedure uses a slit lamp microscope with a special prism tip. After applying numbing drops and fluorescein dye, the prism gently touches the cornea. The device measures the force needed to flatten the surface, which directly relates to the internal pressure of the eye.
Monitoring intraocular pressure helps detect glaucoma early, often before vision loss occurs. High pressure can damage the optic nerve and cause gradual peripheral vision loss. Regular testing supports preventive care and treatment monitoring.
Goldmann tonometry is considered the standard for precision.
The procedure is quick and noninvasive. You'll rest your chin on the slit lamp while the doctor gently measures pressure. There's no lasting discomfort, and normal activity can resume immediately after.
No, numbing drops prevent discomfort during the brief measurement.
At least once a year, or more often if you have glaucoma risk factors.
Yes, other methods exist, but Goldmann remains the most precise for clinical diagnosis.
Goldmann tonometry is the "gold standard" for measuring eye pressure. If you have a family history of glaucoma or have been told you have "high pressure," ensure your doctor performs this specific test rather than just the "air puff" test for the most accurate diagnosis.
Glaucoma Research Foundation. Measuring Intraocular Pressure (glaucoma.org). 2024.
National Eye Institute. Tonometry (nei.nih.gov). 2023.
AAO. Diagnosis of Glaucoma (aao.org). 2024.
Mayo Clinic. Glaucoma Tests (mayoclinic.org). 2024.