Toxins and Mitochondria

Reports of vision changes after stressors, toxin exposure, or charcoal are presented as experiential rather than controlled evidence. Mitochondrial function is described as important for visual performance and readiness for demanding eye training. Sudden or variable visual decline is proposed as possibly reflecting toxin exposure or mitochondrial dysfunction. Visual contrast sensitivity testing is described as measuring the ability to distinguish shades of gray and as a marker of nervous-system function.