What are your recommendations when it comes to wearing sunglasses?

Get outdoor light in your eyes early and late in the day; wear sunglasses when midday sunlight is intense.

• 1. Morning and late afternoon: Avoid relying on sunglasses during these low-sun periods when possible, since they filter light used to anchor circadian timing. Don’t compromise safety, and never look directly at painful bright sunlight. 1
• 2. Midday protection: Sunglasses are appropriate when the sun is high and intense. UV exposure can contribute to cataracts, and excessive bright sunlight can also pose risks to the retina. 2 3
• 3. Prescription lenses and blue blockers: Prescription glasses and contacts are fine for light viewing. The discussion supports UV-blocking lenses as eye protection, but not routine daytime blue blockers: evidence for benefit was uncertain, and blocking blue wavelengths during the day may interfere with circadian cues. 4 5

In short, get unfiltered outdoor light when it’s safe, and use sunglasses for intense midday sun or when needed for safety or comfort.