High School Earth Science/Geologic Time Scale - Lesson Summary. 1  The Earth is very old, and the study of Earth's past requires us to think about times that were millions or even billions of years ago. Scientists use the geologic time scale to illustrate the order in which events on Earth have happened.
Medical Definition of intraocular pressure. : the pressure within the eyeball that gives it a round firm shape and is caused by the aqueous humor and vitreous body.
(March 2015). An intensive outpatient program (IOP) is a kind of treatment service and support program used primarily to treat eating disorders, depression, self harm and chemical dependency that does not rely on detoxification.he typical IOP program offers group and individual services of 10â12 hours a week. IOP allows the individual to be able to participate in their daily affairs, such as work, and then participate in treatment at an appropriate facility in the morning or at the end of the day.