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.
Kant defined imperative as any action or inaction that of one that is necessary. A categorical imperative then makes an unconditional requirement to behave in such a way that it is an end in and of itself rather than a justification of that end. The major problem with Kant's theory, although much more sound than that of utilitarianism, is in the notion that we can will universal law.