Human Growth and Development / Unit 3 HGD 0321 short lesson, about 20 seconds
A Sensitive Period for Vision
Captions available
The idea
The visual cortex develops in a burst at two to four months, and most visual areas are developed by twelve months.
In practice
Infants born with cataracts seeing detail much better when the cataracts are removed soon after birth.
Where people slip
Timing matters here: visual input during the early months shapes how the visual system develops, a sensitive period in action.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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