VERGE

stereo vision training

Viewing technique

Cross your gaze in front of the screen — a third, fused image appears in the middle.

Image separation 70 mm

Exercise

Depth range 4.0 mm Tempo 6 cyc/min

Difficulty 2 / 10

Auto-advance +1 level per 3 min trained Jump vergence step changes, like prism flippers

Fusion aids

Frames around images Zero-depth lock dots Brightness 90%

Appearance

Light shows dark targets on a paper-grey field — easier on astigmatic eyes.

Calibration

Viewing distance 60 cm Your IPD 63 mm

Assuming 3.8 px/mm — calibrate for true millimetres.

Session

Break reminder every 10 min

Space pauses · F fullscreen · [ ] separation · 1–4 exercises · M technique

CROSS · sep 70 mm · disp +0.0 mm (0.00Δ) · lv 2 · 00:00

VERGE

Two images, one for each eye. Aim your gaze so they fuse into a single three-dimensional picture — then follow it as it glides toward you and away. This trains vergence: the eye-teaming muscles that a day of fixed-distance screen work leaves stiff.

Cross-eye

Focus on a point in front of the screen — your fingertip helps. The gaze lines cross. Works at any image separation.

Parallel

Relax and gaze through the screen into the distance. Needs the separation set near or below your eye spacing (IPD).

Start with a small depth range and slow tempo; grow them over days, not minutes.
Use the frames and lock dots until fusion feels stable.
Blink often. Take the 20-20-20 breaks when prompted.
Stop immediately on pain, headache, or double vision that lingers after looking away. This is a training aid, not medical advice.

WebGPU is not available

VERGE

Cross-eye

Parallel

Screen calibration

Look far away