I found the first document from the Wikipedia discussion page for presbyopia and it's certainly revealing.
It's physical training for your ocular muscles, it may benefit presbyopic vision.
presbyopia_chart.pdf (via Archive.org) {the two-page document I found before}
PRESBYOPIA-May-2014-ppt.pdf (via Archive.org) {I just found this and appears to include slides with the claims and basis for the first document from the author/creator}
The guy's website is live and indexed but I just hotlinked to the Internet Archive.
Always use caution when opening strange PDFs but thats not what I'm sharing just this minute and I presume these are safe. Proceed using discretion and consult a physician or some good and wise advisor if you're going to fuck around or else do please move along