Part 6/9:
Light, particularly UV light, plays a critical role in the functions of various hormones produced through the central retinal pathways. The interdependence of vision, hormonal production, and metabolic processes was underscored. The insightful revelations surrounding Fritz Hitsch's work from the early 20th century, which indicated that the removal of cataracts led to a significant improvement in growth and metabolism, challenged modern medical dogma.