While there is an optimal text line width range, I do not enforce it with the 'ch'. Visually challenged users might use bigger font sizes — and a line would ge

While there is an optimal text line width range, I do not enforce it with the 'ch'. Visually challenged users might use bigger font sizes — and a line would get too wide for convenient reading. There are some other issues with this approach. I personally just keep an eye on what the top text-centric sites are doing. The logic being that NYT, Substack, Medium, etc have much more resources than me to research the subject. I just keep a list of about 10 sites and check their readability progress 2-3 times a year.