Vergence Trainer
Wear red/blue (cyan) anaglyph glasses. Fuse the red/cyan dot fields and use the arrow keys to report where the floating target appears.
Score (Exercise)
0
Current PD
0Δ
Session Target PD
30Δ
Round
0
Round Timer
20.0s
Session Left
07:00
Advanced SettingsSetup needed
0.90
0.90
Hover or Tab to any label for what it does.
- Debug Shortcuts: [ or - / _ for -1; ] or = / + for +1. Works in fullscreen.
Press Start to begin.
Session Paused
Exercise
Vergence Trainer
Vergence
Convergence
Eye Split
0 px
- Arrow Keys = choose side (up/right/down/left)
- You will see overlapping red/cyan dot fields. With fusion, a single target appears in depth from binocular disparity (not a drawn outline).
- Space = cannot see target, score -1 and refresh
- Some rounds are catch trials with no real target. If you never get a clear depth pop, press Space: that is the correct call. Choosing a direction on those rounds is a false alarm and is tracked separately, so answer only when you actually see the target. Catch rounds appear only in the staircase modes, never in Facility or Smooth.
- Two vigilance dots sit just above and below the fused center; each is visible to one eye only. If either fades, that eye is suppressing: press S (score unchanged, demand drops, new stereogram).
- P = pause/resume session. Exiting fullscreen with Esc pauses automatically.
- Switching tabs or windows auto-pauses the session so the timers do not keep running in the background.
- Core Settings (in order): Vergence Mode, Visual Preset, Session Target, and Session Minutes define the session profile.
- Three correct answers in a row increase PD; wrong answers, timeout, and Space reduce PD.