Do these glasses really block all blue light?

Blaire says the tint blocks 100% of blue and green light between 400 and 550nm. Independent measurements of similar amber lenses usually show near-total blocking in that range, though results vary by lens.

Can I wear them all day?

They are intended for evening use. The strong tint shifts colors, which makes them awkward for daytime work, driving or anything where color accuracy matters.

Will they help me sleep?

Blue and green light in the evening can suppress melatonin. Blocking it before bed may help, but the effect depends on your overall light exposure and sleep habits.

Are they prescription glasses?

They are non-prescription. People who need vision correction would have to wear them over contacts or choose a prescription alternative.

How do they compare with clear blue light glasses?

Clear lenses block only a small share of blue light and look normal. These amber lenses block far more but visibly tint your view, a trade-off for sleep-focused use.