Top 7 VisualEyes™ 3.2 features for researchers

03 November 2025

For Research Module users, VisualEyes 3.2 includes significant improvements, furthering your possibilities to perform advanced vestibular research.

Below, we’ll explore the top 7 features that make VisualEyes 3.2 an ideal vestibular research solution.

1. Blinking fixation light

You can cue your patient’s eyes with a blinking fixation light to bring their eyes to primary gaze during testing. For this purpose, you will see an additional button in VisualEyes 3.2 (lightbulb) on the toolbar above the cameras.

2. Adjust the duration of caloric irrigations for each temperature

In VisualEyes 3.2, you can now adjust the duration of each temperature. So, if you've ever wondered whether duration makes a difference, now you've got the ability to test it on your research subjects so that you can better serve your patients in the clinic.

For the cool and warm temperatures, a slider is available to decrease or increase the duration of the irrigation. The range is 5 to 120 seconds. — **Figure 1:** Adjusting the duration of caloric irrigations for each temperature.

3. Optokinetic test adjustments

During optokinetic testing, you can change the speed and direction of the test in real-time. These adjustments only impact the stimulus, with no additional measurement or analysis completed.

**Figure 2:** Direction of 270 degrees and speed of 20 degrees per second (left). Direction of 10 degrees and 71 degrees per second (right).

4. Keyboard marker

Some clinicians prefer the ability to mark an external stimulus (such as an auditory masker or goggle cover taken off) on their oculomotor tests to signal why a change in eye movements or pupil diameter may have occurred.

You can use the keyboard letter “m” to place a marker on the eye tracing graph. To add a marker to the tracing, press the “m” key on the keyboard. This will add a black vertical line to the eye tracing graph. You can add as many markers as you want during a recording. This keyboard marker will be present on the eye tracing graph upon reviewing or printing results.

**Figure 3:** Keyboard marker shown around 10 seconds. In this recording, the keyboard marker represents when the goggle cover was taken off and pupils were exposed to room light.

The keyboard marker function is active in the following VisualEyes tests:

Oculomotor assessments	Positional tests	Rotational assessments	Other tests
Spontaneous Nystagmus	Dix-Hallpike	Sinusoidal Harmonic Acceleration	VORTEQ™ Active Head Rotation
Gaze	Advanced Dix-Hallpike	Step Velocity	SVV Static
Smooth Pursuit	Positional	Visual VOR	SVV
Self-Paced Saccades	Lateral Head Roll	VOR Suppression	Caloric
Random Saccade			Ocular Counter Roll
Saccadometry
Optokinetic

You can also export the keyboard marker data. A keyboard marker file will be present in every test file and if you have used this function, the time points will be displayed in the Excel document.

**Figure 4:** The left figure shows the exported results for Research Module users for the Dix Hallpike Left test. In this example (right photo), the keyboard marker was used two times during the testing (at approximately 17 and 21 seconds).

5. Pupillometry

We’ve switched the measurement parameter in the Pupil Diameter function from pixels to millimeters, offering more clinically useful information for Pupillometry.

**Figure 5:** This example shows a patient in Spontaneous Nystagmus testing. You will see the pupil diameter is marked in three time points (around 3, 7, and 12 seconds). The R represents the pupil diameter in mm for the right pupil. The L represents the left pupil.

You can also click Edit Tools > ‘+’ sign to add points to the Pupil Diameter graph to get exact measurements of the pupil size at any point during the recording.

6. Exact degree of head position

Our 3D head model (used in Advanced Dix-Hallpike and Lateral Head Roll testing) now includes exact degree of head position for accurate testing.

Alongside eye position and torsion SPV graphs, a 3D head model displays the exact degree positioning in the horizontal and vertical channels. — **Figure 6:** 3D head model guide with exact degree positioning.

7. Measure rebound nystagmus

You can turn on an ‘Extend End of Recording” feature in gaze testing, which will allow the stimulus to return to center for measuring any rebound nystagmus.

Eye position graphs with degrees as a function of time in the horizontal and vertical channels. In this example, the stimulus is at just below 30 degrees for about 10 seconds, after which it is at 0 degrees for 5 seconds. — **Figure 7:** ‘Extend End of Recording’ for measuring rebound nystagmus.

Advancing vestibular research with VisualEyes

These are just some of the possibilities to use VisualEyes for vestibular research. To learn more, please discover VisualEyes 3.2.

Dr Liz Fuemmeler

Dr. Liz Fuemmeler is the Balance Clinical Product Manager with Interacoustics and Vestibular Program Director at Professional Hearing Center in Kansas City, MO. She graduated with her Doctorate of Audiology in 2019 from Purdue University and received specialty training in vestibular and balance disorders at Boys Town National Research Hospital and the Mayo Clinic. She is actively involved in vestibular and concussion research and regularly lectures for local, national, and international conferences. Outside of her role with Interacoustics, she co-hosts a monthly podcast called "A Dose of Dizzy'' that reviews current vestibular protocols and research. She also is the past-president of the Missouri Academy of Audiology and volunteers with the American Academy of Audiology.

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Published: 03 November 2025

Modified: 06 November 2025