The developing pre-natal eye requires light that passes through the body and into the womb, according to recent animal research. Mice that had no access to light during pregnancy gave birth to offspring whose eyes were not developed correctly. This indicated that small amounts of light are necessary, during gestation, to control eye blood vessel growth.
This research is considered to be a breakthrough, and scientists were surprised because until now, maternal exposure to light during pregnancy was not considered relevant to fetal development.
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