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| - If there is family history of childhood vision problems, or if the child has a wandering, crossed, or other eye problem, his or her eyes should be checked earlier.Before the age of 20Every one to two years or as recommendedBetween 20 to 40 years oldEvery one to two years, unless you experience any problems such as visual changes, pain, flashes of light, new floaters, or tearing, or if you sustain
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