Does a fetus see anything? It is known that the eye can sense light as early as the third month of pregnancy. Sometimes when an endoscope is inserted into the amniotic sac, a fetus tries to protect its eyes from the light on the instrument, either by turning away or by using its hands and fingers.
Lennart Nilsson and Lars Hamberger, A Child is Born, 4th edition. (New York: Bantum Dell, 2003) 141.
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