As the teacher whom I teach the blind students Information Technology,
I found this article which expalain how Powerpoint is a best tool for students with visual impairment. I recommend that you go through the following URL then you should agree with me that it is very important for the teachers including me, who teach Visually impaired students.Here is the article;
"The electronic file format allows distribution and modification for/by students unable to be present or who have impaired visual or auditory difficulties. PowerPoint comes with a free viewer programme that can be distributed with the files so that the reader is not required to have PowerPoint on their personal system. However, if they do have it, they are able to perform a greater variety of manipulations on the PowerPoint file provided, such as editing the text, etc before printing it out. Most Virtual Learning Environments (VLEs) are now capable of including PowerPoint presentations if required".
Here is the URL,
Thanks for your attention,