Slide show: Fetal ultrasound
Fetal ultrasound showing the lens of baby's eye
Previous Next 7 of 14 Baby's eyes

Any guesses about this image? It's the lens of a baby's eye.

Twenty-three weeks into pregnancy, or 21 weeks after conception, a baby begins to have rapid eye movements. A baby's eyelids begin to open at 28 weeks into pregnancy, or 26 weeks after conception.

See more Multimedia Nov. 10, 2020