Is there really a scientific case for using 2 spaces after the period?

I just read this article in the Atlantic: Study – Two Scientrific Case For Two Spaces After a Period . Skidmore College researchers performed a study to answer the question.
I was taught to use 2 spaces, but I learned keyboarding on a typewriter.
I’ve found that as I get older the periods in some fonts are getting difficult to see without “cheater” reading glasses. The two spaces make the end of the sentence stand out.
Do you still use 2 spaces?
Are there other studies that cover this burning issue?
What style do librarians prefer?