Do you really know? Are blue eyes really more sensitive to light?
Nov 17, 2025
Explore the intriguing world of eye color and sensitivity! It turns out that blue eyes may indeed be more vulnerable to light due to their lower melanin levels. The host dives into the anatomy of the iris and discusses how sunlight can harm our eyes, leading to issues like photokeratitis and cataracts. Plus, get tips on choosing the right sunglasses to ensure maximum UV protection. In just under three minutes, you'll gain valuable insights into eye care and the science behind why some people squint more than others!
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Eye Colour Isn’t The Main Sun Shield
- Eye colour depends on melanin concentration in the iris's outer layer, but the inner layer is opaque and brown for everyone.
- Because the inner layer provides the main protection, people with blue eyes are not inherently more sun-sensitive.
Protect Young Eyes From UV Damage
- UV rays can damage the lens and cause premature cataracts and photokeratitis with tearing, spots, blurred vision, and pain.
- Protect eyes from unshielded sun exposure, especially for children whose lenses are fully transparent until age 12.
Pick Proper Sunglasses, Not Just Any Tint
- Choose sunglasses with CE marking and a visible lens shade category from 0 to 4 to match conditions.
- Fit frames well with an optician and use category 3 for seaside and 4 for children or high altitudes.