He gives the toddler an iPad only when there is no other way to make her happy and he tries to divert her attention away from the tablet as soon as she has stopped crying.

"I never allow her to play longer than 15 minutes every time," Tong says. "Babies love the iPad and it is an efficient way to entertain and appease them, but it harms their young eyes."

Tong also feels that keeping up with all the new apps that appear on the iPad may influence his daughter's concentration and make her too distracted.

He is also fearful of news reports that young children are suffering from early vision defects and degeneration of cervical vertebrae due to hunching over the tablets or computers too long.

Beijing resident Zhang Huihui recently managed to wean her 6-year-old son off the devices mainly because of health reasons, but it was a tough process.

Since she bought an iPad a year ago, her son played with it for at least 30 minutes every day.

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