a (middle voice) prolonged form of the primary (middle voice) optomai (op'-tom-ahee); which is used for it in certain tenses; and both as alternate of horao; to gaze (i.e. with wide-open eyes, as at something remarkable; and thus differing from blepo, which denotes simply voluntary observation; and from eido, which expresses merely mechanical, passive or casual vision; while theaomai, and still more emphatically its intensive theoreo, signifies an earnest but more continued inspection; and skopeo a watching from a distance)