The eye tracking results presented here include data from a patient with Visual Snow Syndrome, as well as two control subjects without symptoms. The patient exhibited oscillopsia, palinopsia, and entopic phenomena.
In the tracking analysis, the subject focused on a specific point on the monitor while the eye tracking software monitored pupil dilation.
The Cervico-Ocular Reflex (COR) was assessed by having the subject sit on a rotating chair while holding their head steady. The subject was then asked to rotate the chair while keeping their chest centred. The sternum was positioned directly to the monitor’s edges. (Px set at 50cm from the monitor and screen size 66cm(
The first control subject exhibited normal COR results, demonstrating the expected response in individuals without symptoms.
Here we have our first control subject with no symptoms – CERVICO-OCULAR REFLEX
The second analysis is from the control subject and again similar results. The bottom right of the eye tracking software shows realtime tracking of pupil changes, convergence and any vertical tropias.
Here is Subject 2 NO Symptoms CERVICO-OCULAR REFLEX
In the following track we repeat the experiment with MW a VSS sufferer. We can see here he copes quite well initially but soon fatigues. He resorts to a ‘long blink’ to reset.
Here is MW he suffers with VSS and this is his COR