Optometrists: Nintendo 3DS could ID vision issues

FILE - In this Sept. 29, 2010 file photo, a visitor operates a Nintendo 3DS featuring 3-D imagery during a press conference by Nintendo Co. Nintendo Corp. has warned that the 3-D screen on its new 3DS handheld game device shouldn't be used by children 6 or younger because it may harm their immature vision.(AP Photo/Shuji Kajiyama, file)

FILE - In this Sept. 29, 2010 file photo, a visitor operates a Nintendo 3DS featuring 3-D imagery during a press conference by Nintendo Co.Nintendo Corp. has warned that the 3-D screen on its new 3DS handheld game device shouldn't be used by children 6 or younger because it may harm their immature vision.(AP Photo/Shuji Kajiyama, file)

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