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.
Imperative Verbs. Imperative verbs are also known as âbossy verbsâ- they tell people what to do! e.g. close. the door; empty. the bin; eat. your dinner! TASK ONE: Look at the words below-colour in the words that could be used as imperative verbs.mperative verbs are also known as âbossy verbsâ- they tell people what to do! e.g. close. the door; empty. the bin; eat. your dinner! TASK ONE: Look at the words below-colour in the words that could be used as imperative verbs.