Researchers detect preschool vision problems

(NBC NEWS) –  Texas researchers try to see if 4-year-olds have vision problems with only a camera.

Preschoolers at Hubbards Heights Elementary School patiently waiting their turn for the test.

Some may be a little nervous to go into a dark room where only a $6500 refractometer camera tests their vision.

Researchers say this camera can tell if a child has vision problems and could detect these problems early on in life. provides commenting to allow for constructive discussion on the stories we cover. In order to comment here, you acknowledge you have read and agreed to our Terms of Service. Commenters who violate these terms, including use of vulgar language or racial slurs, will be banned. Please be respectful of the opinions of others and keep the conversation on topic and civil. If you see an inappropriate comment, please flag it for our moderators to review.

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