Open Access is about providing access, and that includes via accessibility measures. While not everything is as accessible as it should be, here are a few projects, and the measures the UO Libraries' are taking to work towards truly Open Access.
Authorship and Accessibility in the Digital Age: A Roundtable Report - Author's Alliance, September 11, 2018
OER and Accessibility: Working Toward Inclusive Learning - SPARC*, October 8, 2018