In 1922 he contracted an eye disease that eventually left him completely blind, which caused him to rely increasingly on his students, including René Wellek and Bohumil Trnka, to assist him in his teaching, reading, and writing.
He contracted an eye disease. This was in 1922. This eye disease eventually left him completely blind, which caused him to rely increasingly on his students to assist him in his teaching, reading, and writing. This was including René Wellek. This was including Bohumil Trnka.