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).
She looks to see that the lids don't droop and checks the position of your baby's eyes, lids, and lashes. The doctor checks your baby's eye movement by watching his ability to fix on an object (like a toy) and follow it as she moves it into different positions. She'll do this with each eye and with both eyes together. Your baby should be able to follow these movements by the time he's 2 or 3 months old. To test your baby's vision, she'll watch how he follows an object with one eye and then the other eye (covering one eye at a time).