The pressure decreases because there is less density meaning there are less atoms or molecules in a space. Gravity determines the density by pulling in more molecules towards â¦ the center of the Earth.
Therefore, about 85-90 percent of children with hereditary retinoblastoma develop multiple tumors that affect both eyes (bilateral disease). The remaining 10-15 percent of patients with hereditary retinoblastoma develop only a single eye tumor (unilateral disease).
A: Vision is the last sense your baby develops, which helps explain why her eyesight is so fuzzy as a newborn (at birth, your baby can only see about 8 to 12 inches in front of her). Your unborn baby's eyelids remain closed until you're about 28 weeks pregnant, which allows the retinas to fully develop. After that time, her eyes open and even begin to blink. Here's a fun fact: As soon as their eyes open in the womb, twin babies can find each other -- and will touch each other's faces or hold hands!