Listen to the tapes or review your notes as soon as possible after class. Sit toward the front of the classroom to maximize verbal cues. If you are having trouble, seek out campus help as soon as possible. Approximately 100,000 people in the U.S. are totally blind. Legally blind does not mean one has no useful vision.
Useful vision varies greatly.
Persons who have literally no vision do not see black. The loss of a single sense does not make the remaining senses more acute. Magnification does not help all types of visual impairments. Sometimes it is a hindrance. There is often apprehension about teaching or working with students with disabilities due to lack of experience.