COMMUNICATIONS RETINAL CYSTS ANDRETINOSCHISIS* BY C. G. KEITH DepartmentofPathology, Institute ofOphthalmology, University ofLondon SINCE the term retinoschisis came into commonophthalmological parlance, it has oftenbeenusedas thoughthe conditionwereadefinite entity, differing fromretinal cysts bythe process byWhichit arose.
The definition of imperative is something that has authority or is absolutely necessary. 1  An example of imperative is the power that a government has over its people.  An example of imperative is the decision to give a cesarean in a breach birth.
The example of a thirsty person Kant named the Hypothetical Imperative. Kant used the hypothetical imperative to explain his ideas about the ethics of a categorical imperative. For example, it is not usually a moral choice when a person decides to drink water, no matter why they are drinking the water.