Another difficulty is more subtle - the psychological response that large print evokes in the sighted reader. Instructors sometimes assume the partially sighted student is only trying to make an assignment longer. Most blind student use a combination of methods including readers, audio taped books and lectures. Students may use raised drawings or diagrams, charts, and illustrations, relief maps, three-dimensional models of physical organs, shapes, etc. Talking calculators and reading machines are beneficial to students, although not often readily available.
Some faculty members are concerned about having their lectures tape- recorded.
Some blind students use service dogs. Dog guides will not disturb the class. Faculty and classmates must remember not to pet the dog and distract it from its duty. The dog is responsible for guiding its owner. Students will not be exempt from examinations or expected to master less content because of a visual impairment.