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).
Study Suggests Zika Causes Blindness. A baby born with microcephaly is examined by a neurologist on Feb. 12, 2016, at the Pedro I hospital in Paraiba state, Brazil. Babies born with microcephaly caused by the Zika virus can suffer from worse eye problems than researchers thought, according to a new study. A study conducted in Brazil suggests that babies born with microcephaly caused by the Zika virus may develop eye problems that could lead to blindness.