Eye-Bo The Ocular Fitness Program Anonymous 2017-11-29 12:17:32 No. 995
Eye-Bo is a suite of audio-visual training tapes for anyone with a decently sized screen.
In a nutshell: black and white flashing accompanied with audio pulses, synchronized at at the same frequency. (If you are prone to epilepsy then you will want to be careful.)
If the site and the sources go down I've got a copy and can upload them.
Anonymous 2017-11-29 12:29:40 No. 996
Nice. Gonna try this.
Anonymous 2017-11-29 14:23:29 No. 998
Anonymous 2017-11-29 18:22:28 No. 1000

from the link:

"Most notably, perks like reduced anxiety and headaches, better ability to mentally visualise, improved long or short-term memory, or increased focus are examples of what can be achieved through long-term use of the appropriate tapes."

Testimonials in the link also