Toxins and Vision
Eating fish is often recommended for its omega-3 benefits, but many fish and supplements may contain harmful toxins. A visual contrast sensitivity test can reveal how well your nervous system is functioning and detect exposure to neurotoxins. Changes in vision, like sudden nearsightedness, might indicate an increased toxic load, prompting a closer look at environmental factors.In this clip
From this podcast

The Human Upgrade
Experts on How to Improve Your Vision Naturally | 1196 | Dave Asprey
Related Questions
Should you get more EPA or DHA in omega-3 supplements as discussed in the episode Unlock Brain Health: Why You Need Omega-3s with Gary Brecka and the clip Omega Three Myths?
Should you get more EPA or DHA in omega-3 supplements based on the episode Unlock Brain Health: Why You Need Omega-3s with Gary Brecka and the clip Omega Three Myths?