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.
What Is an Imperative Sentence (with Examples) An imperative sentence gives a direct command. It can end in a full stop or an exclamation mark, depending on the forcefulness of the command. The main verb in an imperative sentence is said to be in the imperative mood. Here are some examples of imperative sentences: