Most doctors think that...
多数医生认为这种不舒服的感觉是完全无害的，但也有少数人称幼童可能会因此感到眼球疲劳从而增加其患近视的机会。
Most doctors say the discomfort is completely harmless, but a few say that young children may increase their chances of becoming nearsighted when they put too much strain on their eyes.
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