Metabolic and Nutritional Support

Bilberry, astaxanthin, lutein, and zeaxanthin-like carotenoids are identified as compounds that support vision. Fish oil is treated as potentially useful in moderate amounts but uncertain or excessive at very high intakes. High blood sugar and repeated glucose or insulin spikes are linked to advanced glycation end products that can stiffen collagen-containing tissues. The source cautions that high-dose supplement use is personal practice rather than a general recommendation, and that excess can be harmful. Omega-6 intake and fried foods are discussed as possible inflammatory factors that may affect vision.