Says Michael Duenas, associate director for health sciences and policy for the American Optometric Association:
The 3DS could be a godsend for identifying kids under 6 who need vision therapy.
Nintendo's latest handheld is on sale in Japan and will hit the U.S. next Sunday with a $250 price tag.
The handheld can display 3D images without the need for special glasses, and can take 3D pictures.
If a child under 6 cannot see the 3D effect, it is a clear sign that they may have amblyopia (lazy eye) or other vision disorders, says the AOA.