This seems consistent with any policy that would provide equal opportunity to visually impaired. This is somewhat off topic, but I am old enough to recall when hand held electronic calculators first came out on the mass market. It was my first year in college. I believe HP had the first, followed soon by TI. These were bulky things compared to what exists today and expensive ~$400. I recall the debate in Chemistry and Physics classes was if it was fair to allow students who could afford these calculators to use them on exams, where the rest of use still had to manage with slide rules. That year the answer was no calculators during exams. A couple of years later it was not considered an issue.