Ubisoft is developing a game you’ll never be able to play without a doctor’s prescription.

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It’s called Dig Rush, and by using a pair of old-school, tinted 3D glasses, it may help treat Amblyopia, a sight disorder that affects 3% of the earth’s population. People with the condition often have a “lazy eye,” but it can take another form where one eye is simply much weaker than the other.Here’s how the game works.Using a doctor prescribed tablet and the aforementioned pair of specs, the player steers miners through dangerous caverns in pursuit of treasures. Because the game is mostly black and white, and only the characters, enemies, and objects are colored, you need to use both eyes together to see.Close one eye and you can only see your characters. Close the other eye and you can only see your obstacles. Of course, to win, you need both. Swiping controls movement, so you’ll have to steer your diggers away from danger. Levels are built around the popular three-star mechanic which offers higher rewards for more skillful play.Using research from McGill University, Ubisoft has partnered with Amblyotech to create the game. Researchers at McGill found that using a similar model, 90% of patients saw an improvement in their condition in as little as 4-6 weeks after playing only an hour a day.However, patients soon grew bored of playing one simple video game level over and over. With Dig Rush, the idea is to partner with Ubisoft to make a game that people actually want to play, while helping to correct their vision.One of the most common treatments for Amblyopia, wearing an eye patch, is a nearly 200-year-old treatment option. If Amblyotech completes its clinical development and gets cleared, it could be a fun new option for people whose treatment options were so limited.

Brian is an associate editor at IGN. You can follow him @albinoalbert on Twitter