Eyes that are not clear up close, but normal in the distance, are most commonly known as presbyopia. Presbyopia is an aging phenomenon caused by the normal aging of the eyes after the age of 40 and the decline of crystal regulation. It is a phenomenon that can be corrected by wearing glasses, i.e., you can see things clearly in the near area after wearing glasses. Presbyopia is a manifestation of the aging of the body and is not a disease.