[Philip Lelyveld comment: this is the first mainstream article I’ve seen with specific advice to parents.]

[Excerpt]

…  “Children who have even a small vision misalignment or those who lack equal vision in both eyes may not be able to perceive 3D images properly,” explains Dr. Carl Hillier of the California Optometric Association. “Watching 3D imagery, which creates the illusion of depth by presenting each eye with a slightly different image, can unmask ulterior issues such as lazy eye, convergence insufficiency, poor focusing skills and other visual problems students might not have previously known existed.” …  These conditions often manifest in poor reading ability and performance in sports as well as low self-esteem; all problems that could follow a child throughout life. …

Early detection and treatment are critical in correcting vision problems and helping students reach their highest potential, but how is a parent to know? Look for these five warning signs that your child may be part of the 25% who will be at a disadvantage in the classroom this year.

• Returns from seeing a 3D movie feeling dizzy, nauseous or with a headache; or child doesn’t see a difference between 2D and 3D images
• Trouble hitting or catching a ball
• Clumsy, often bumping into things
• Frequently loses place when reading or uses a finger to follow words
• Discomfort and avoidance of reading and 3D viewing

…

Read the full article here: http://www.mspnews.com/news/2011/07/28/5668243.htm