Despite its image as a secondary and innocuous activity and the demand for its invisibility, translation revision is an important interventional step of the translation process that deserves serious study. The present work has as its objective the discussion of translation evaluation on the basis of the study of the interventions made by translation revisers. To do this, we comparatively analyze revisions of translations of subtitles for cable TV, literary texts, and technical texts, before and after they have undergone the revision process. Our intention is to identify the different interventions made by revisers in the translated texts. We analyze translation revision in the light of non- immanentist theories of meaning, rethinking the definitions of translation, adaptation, error and evaluation, as well as the implications of the questioning of these concepts for the practical work of revision. In particular, we rely on Wittgensteinian notions of language in our discussion of the process of translation evaluation, some of its main elements, roles and forces, and the relation between them. Thus, we analyze the role of revisers in translation evaluation: the strategies they use, the intervention they make and their authority in this process.