Circles Divergence
An Eye Alignment exercise - identify which of four small circles appears 3D as the target moves outward.

Why
Our vision system combines feedback from both eyes to arrive at a single image with depth. The eyes work together with great precision and coordination to both position the eyeballs in the correct direction and also to adjust the focus of both lenses. If any of these processes are not in sync, challenges with eye-hand coordination, distance estimation, focussing, etc. might be experienced.
How
Choose which of the four small circles is 3D by tapping on that area of the screen.
Goal
See how many slides you can get correct!
