Testing an infant's eyesight

Testing an infant's eyesight

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Caption: First sight: Donald Duck, suspended in front of a coloured pattern displayed on a computer screen is used to evaluate a 7 weeks-old infant's sight. Scientists at the Smith-Kettlewell Institute in San Francisco record electrical activity in the brains of infants in response to visual stimuli displayed on a computer. The toy is used to engage the baby's attention whilst the pattern changes at a controlled rate - in colour, brightness or size. The infant's response to these changes is measured through electrodes taped to her head. The method gives a measure of visual development, when images become too faint to provoke a response in the brain.

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Keywords: baby, healthcare, infant, medical, medicine, paediatric child, paediatrics, pediatric, vision test, visual test

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