Summary
In this Interventions with Dave episode, Dave Asprey helps world record powerlifter Mark Bell address his declining eyesight. Mark, in his 40s, noticed sudden difficulty with near vision and has been using readers that may be worsening the problem. Dave explains the physiology behind age-related vision changes, connecting it to muscle weakness, tissue stiffness, collagen cross-linking, and neurological signal issues. He recommends Bates Method-based eye training, discusses how environmental factors like LED lighting affect eye health, and draws parallels between eye muscle training and Mark's expertise in strength training -- noting that eyes need both strength and flexibility, much like the rest of the body.
Key Points
- Age-related vision decline involves muscle weakness, tissue stiffness, collagen changes, and neurological signal degradation
- Wearing readers can worsen the underlying problem by allowing continued strain without feedback
- Dave Asprey personally maintains 20/15 vision without reading glasses using eye training methods
- Eye muscles need both strength and flexibility training, similar to skeletal muscles
- Looking at sunrise (not directly at the sun) and vitamin blends can help but are not enough alone
- LED lighting and harsh artificial light accelerate eye aging
- Active eye training exercises based on the Bates Method can reverse age-related vision decline
Key Moments
Eye muscles need strength and flexibility training
Dave explains to powerlifter Mark Bell that age-related vision loss involves muscle weakness and tissue stiffness in the eyes, drawing a parallel to how Mark is very strong but lacks flexibility.
"You have something that's really common. You're becoming nearsighted. Sorry, farsighted as you age. I said it backwards, of course. And you can hack this pretty effectively. There's some things going on. One of them, are you ready for this? Muscle weakness."
Readers may be making the problem worse
Mark Bell admits his readers are probably worsening his vision, and Dave confirms that corrective lenses allow strain to continue without the natural feedback that would prompt rest.
"Like wearing readers and things like that probably are making the problem a little bit worse."
Dave's sustained 20/15 vision as proof of concept
Dave describes the neurological component of vision and shares that his own sustained 20/15 vision without reading glasses demonstrates what is possible with eye training.
"And then there's also a neurological thing where the brain may not actually be connecting. And you've probably seen this in some of your lifts, right? There's some kind of a connection between the thought and then actually doing it."
