Visual tracking test and moving-target practice guide
A visual tracking test asks you to keep a moving target available to your eyes while it changes position, speed, or direction. This drill adds a pointer click, so the useful loop is detect, follow, move, and intercept rather than simply stare at a fixed signal.
Smooth pursuit and catch-up saccades are different parts of that loop. Pursuit helps the eyes match a moving image; a rapid re-acquisition movement helps when the target outruns the current gaze. A browser canvas cannot measure eye position directly, so this page reports a task score, not a clinical eye-movement result.
The target becomes harder as speed, bounce frequency, and level pressure rise. The best practice signal is not a single fast click: it is stable accuracy while the target moves unpredictably and your pointer remains under control.
Compare sessions on the same display, browser, pointer, sensitivity, and input method. Record accuracy, average reaction, level, and combo together, take short breaks, and stop if the exercise causes visual discomfort.
Scope note: this is browser-based visual-motion practice. It does not record eye position, diagnose an eye or neurological condition, or replace clinician-directed vision therapy. Stop for pain, dizziness, nausea, persistent blur, double vision, headache, or unusual visual symptoms.