You can measure the judgment of the stereogram a game.
Sometimes vision is restored.

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Features
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■ stereo grams and is
Drawn diagrams and pictures to the depicted plane to have a three-dimensional impression.
The focus of the eyes can be seen in three dimensions by intentionally matched by shifting back and forth. Also referred to as a three-dimensional image.

■ random dot stereogram
It’s image that can not be seen only as seemingly noise, but it is an image that emerges is three-dimensional Taken together, well focus.

■ practice way as with respect to stereo grams please refer to the following Wiki.
Wikipedia stereogram

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How to play
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■ rules
· Read the number that pops up stereogram practice how to reference.
· The read the same number as the number to select the number that appears at the bottom.
· Please tap the color of as soon as possible correct answer.
· Since the game score is countdown, please tap the number of correct answers before they become 0.
· Remaining game score will be added to the total score.

■ game screen display
· Total score
Remaining game score when you clear will be added.

· Game count
Surface will proceed Clearing.

· Game Score
Time spent in the game will be displayed as a score.

■ game level of
· Easy
Please tap the correct answer within 20 seconds.
1 – 10 of problem appears.
Guide to match the view appears.

· Normal
Please tap the correct answer within 20 seconds.
1 – 25 of problem appears.
Guide to match the view appears.

· Hard
Please tap the correct answer within 15 seconds.
1 – 25 of problem appears.
Guide to match the perspective does not appear.

I’s Free, so try.