Tips for Measuring IOP in an Unusual Cornea

Mar 12, 2024 | Optometry

Intraocular pressure (IOP) measurement is a fundamental procedure in ophthalmology, crucial for diagnosing and managing conditions like glaucoma. However, measuring IOP accurately can become a challenge when encountering an unusual cornea, whether it be due to dystrophies, scarring, or postsurgical changes. Read on to learn some essential tips for measuring IOP in an unusual cornea to help you with patient care.

Try Using a Tonopen

For corneas that defy conventional measurement methods because of their shape or thickness, the Tonopen offers a versatile solution. Its portability and ability to measure IOP from different angles make it especially useful in challenging situations. Ensure you have calibrated the device correctly before each use and become familiar with its use in normal corneal conditions to appreciate its readings in more unique circumstances.

Take Your Reading in a Clear Area

Another tip for measuring IOP in an unusual cornea is positioning the device appropriately. This might require you to adjust the patient’s gaze. Your patience and detailed attention to the corneal anatomy will aid in selecting the best possible site for an accurate IOP measurement.

Calculate an Average of Two Measurements

Variability in readings can be a significant concern when dealing with unusual corneas. To counter this, take at least two measurements from different axes and calculate the average to achieve a more reliable IOP reading. If the readings are widely disparate, additional measurements may be necessary to ascertain an accurate assessment but keep in mind the patient’s comfort and the potential for corneal stress.

Monitor the Optic Nerve’s Condition

Sometimes, direct measurement of IOP can be misleading, especially in eyes with abnormal corneal conditions. In these instances, closely monitoring the optic nerve can provide invaluable information and suggest whether you and the patient are managing the IOP effectively despite the challenges in direct measurement.

Although measuring IOP in an unusual cornea presents unique challenges, these tips can help you achieve accurate results and make better patient care decisions. Automated Ophthalmics Inc. can help those professionals who need to use a Tonopen when examining patients’ eyes. Our Tonopen tip covers help keep your instruments sanitary in between patient appointments.