What did Leopold von Ranke write after his eyesight began to fail?

Despite his failing eyesight, which forced him to rely on the assistance of others, Leopold von Ranke began his final and most ambitious project at the age of 82: a nine-volume Weltgeschichte (World History), published between 1881 and 1888.1

Rather than a piece of critical research, this work served as a broad narrative account of cultural evolution from the ancient Greeks through the 15th century, effectively functioning as a history of Europe. Through this project, Ranke fulfilled a lifelong ambition to document universal history, writing from the perspective that the peaceful development of culture had been secured against the threat of revolution.1