Tongtong
Vision Training
Back to all games

Four-Patch Find Convex

Quad-grid stereopsis

Find the only outward-protruding pattern in dynamic random-dot matrices as an introduction to E-letter training.

Stereopsis training · Build and restore 3D depth perception

Sign up and start training
Four-Patch Find Convex

How to play

  1. 1Four dynamic random-dot matrices arranged in a 2x2 grid appear at screen center.
  2. 2Put on training glasses and fuse; only one of the four blocks has a protruding pattern; the other three are just dynamic random dots.
  3. 3Click the protruding block directly or press 1/2/3/4 to choose.

Tip

First stabilize fusion of the four random-dot blocks, then compare which has the protruding pattern. If you can't see it, you can slow down; no need to rush.

Want to try this game? Sign up to start training.

Sign up and start training

Vision Training is a home vision-training tool, not a medical device, and provides no medical advice. If you have an eye condition or discomfort, consult a professional doctor.