"The eyen" is an archaic term for the eyes. In modern-day English, there are numerous synonyms that can be used instead of "the eyen." Some examples include "sight orbs," "visual organs," "optic spheres," "facial features," "gaze globes," "peepers," "sight sensors," and "watchful windows." Depending on the context, other synonyms could include "optic nerves," "pupils," "irises," or "eyeballs." Using synonyms can help to vary the language used and make writing more interesting, while still conveying the same meaning.