Universal Design. That's what is needed to ensure the subject material is the same for everyone. As long as you make your course materials accessible, the disability office can usually turn around the conversion into braille pretty quickly. Tactile graphics need additional time to make accessible, but even those can be turned around quickly with something like a PIAF (Pictures in a Flash) or make them into a 3D printable file which everyone can use.
Another item to look into would be an AIRA device sync'd with cochlear headphones. AIRA is a service which provides blind or low vision users with a Google Glass device and a WiFi connection and can provide audio descriptions of your course and can help with notetaking. Less expensive than a personal assistant and more reliable.
You may also want to look into the
$1 for accessible ways to provide STEM materials.