I would stay away from any light therapies that use the eyes to stimulate the brain. "A Perfect Light" is designed to work with muscles and other tissues but not brain tissues. It is for skin repair and sports injuries/joints and muscles. It does not sound like it will help his brain. The fine injuries to the brain will not repair any faster than they do naturally.

I hope your chiro is not doing any "twist the head and pop the neck" adjustments. They are far too aggressive for a head injury, much less a 5 year old. I have extensive experience with chiros in the Santa Clara Valley. I hope you have one of the few great ones.

Try to take it slow. His young brain needs to sort this out without excessive external efforts.

My best to you and your little Joshie.