Under-eye bags and dark circles result from a mix of pigmentation, vascular changes, and fluid retention, often worsened by high salt intake and dehydration. While cold compresses offer temporary relief, lasting improvements depend on sleep, hydration, and nutrition. Red light therapy shows emerging potential for conditions like macular degeneration, though consumer devices lack regulation and pose risks. Direct sun-gazing is dangerous and can cause permanent retinal damage, despite anecdotal claims. Blue light from screens doesn’t cause eye disease but disrupts sleep. Most notably, diet plays a critical preventive role—especially a Mediterranean-style diet rich in leafy greens and omega-3 fatty acids, which significantly lowers the risk of vision loss. Carrots, contrary to myth, aren’t the top eye food; spinach, kale, and oily fish are far more effective.