The document summarizes research conducted to evaluate the accessibility of mathematical formulas in digital teaching documents. MS Word with MathType was found to produce the best results for visualization and reading aloud of formulas converted to MathML. Recommendations include encouraging professors to use MS Word + MathType to create accessible formulas and providing manuals for converting LaTeX formulas or creating formulas with MathType. Further work includes sharing the test results data and exploring conversion of paper documents to digital formats.