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Eye, robot: Artificial intelligence dramatically improves accuracy of classic eye exam - Science Magazine

Eye, robot: Artificial intelligence dramatically improves accuracy of classic eye exam - Science Magazine

Eye, robot: Artificial intelligence dramatically improves accuracy of classic eye exam - Science Magazine
Jun 03, 2020 1 min, 27 secs

The classic eye exam may be about to get an upgrade.

If perfected, the test could also help patients with eye diseases track their vision at home.

“It’s an intriguing idea” that reveals just how antiquated the classic eye test is, says Laura Green, an ophthalmologist at the Krieger Eye Institute.

The classic eye exam, known as the Snellen chart, has been around since 1862.

He wanted to find a way to remove human error from the Snellen exam, while improving its accuracy.

After entering the distance they are from the screen, the test displays an “E” in one of four orientations.

The test asks 20 questions per eye and takes a couple minutes to complete.

When the researchers ran their “Stanford acuity test” (StAT) through 1000 computer simulations mimicking real patients, the diagnostic reduced error by 74% compared with the Snellen test, the team reports this month in the Proceedings of the AAAI Conference on Artificial Intelligence.

You can take StAT yourself at myeyes.ai, although Piech cautions that the test isn’t meant to replace doctor visits just yet.

“It’s definitely helpful,” says Mark Blecher, an ophthalmologist in Philadelphia who’s written opinion articles comparing various eye tests before.

Online eye tests aren’t really new, but Blecher commended the clever use of AI in boosting accuracy.

Blecher says for the next step it would be important to consider the circumstances in which the user takes the test.

Things like room lighting or screen brightness could affect the scores, he says.

Whether the StAT test will actually replace the Snellen chart is up for debate.

Blecher says getting all eye care professionals to agree on a new standard would be “daunting at best” because the status quo can be hard to overcome.

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