Do I really need to wear blue light glasses?

The internet tends to answer this in one of two ways: "yes, absolutely, your eyes are in danger," or "no, it's all a scam." Both miss the point. Our answer is yes - but not out of fear. It's the same yes you'd give to "do I really need exercise." Nobody can prove you'd get heart disease without it. You do it because the odds matter, and because hearts don't come with spares. Neither do eyes.

A blue light lens filters some of the blue wavelengths coming from screens, artificial light and the sun - the biggest blue source of all. It won't cure anything, and it won't undo a bad night's sleep on its own. What a well-made lens can do is ease the harsh, high-energy end of the light, and - in the evening - hold back the specific blue that tells your brain it's still daytime.

An investment in your eyes

Think about why you exercise. You don't know that skipping it would have given you heart disease - you do it because you'd rather not take the chance. A small, regular investment in something you can't replace. Your eyes run on the same logic. The cells at the back of them don't regrow, and the wear from harsh, blue-rich light adds up quietly, over decades rather than days.

That isn't a brand talking its own book - it's how prevention works everywhere in health. You wear sunscreen before the sunburn and move your body before any diagnosis. Filtering the damaging blue doesn't mean your vision would otherwise fail, and we won't pretend it does. It's an investment in keeping your eyes healthier for longer: no guarantees, just better odds for something you'll want working well your whole life.

You'll likely feel a difference if…

• You're on screens for six or more hours a day.
• Your eyes feel tired, dry or strained by evening.
• You use your phone or laptop in the last hour before bed.
• You find it hard to switch off and fall asleep after screen time.

Those are the exact problems these lenses were built for. If you recognise yourself in that list, a lens is genuinely worth trying.

Nobody exercises because disease is certain. You invest because the organ matters.

When you won't feel much difference

If your screen time is light, your eyes feel fine, and you sleep well, a lens won't transform your day - and we'd rather tell you that than promise sensations you won't get. What stays true even then is the long game: light adds up for every pair of eyes, whether or not you feel it. The case for starting early is prevention, not symptoms.

Comfort by day, rhythm by night

It helps to separate the two reasons people wear them. During the day, it's about comfort - taking the harshest end out of the light so long screen sessions feel easier. At night, it's about rhythm - keeping the daytime signal out of your eyes so your body can start winding down. A single all-day lens is a compromise; matching the lens to the moment is where the real difference lives.

Who feels it most? In our experience, three groups: people whose work is a screen from nine to five, people who read or scroll in bed, and anyone whose eyes are simply more sensitive than average. If that's you, the case is strong. If it isn't, a lens is a nice-to-have rather than a need - and we'd always rather you knew the difference before you spent a penny.

If you saw yourself in the list above, they're worth trying - and our 90-day trial means you can find out with nothing to lose. If you didn't, the choice is the exercise choice: nothing forces you to start today, but the earlier you start, the longer the investment has to work. Either way, the goal is an honest case, not a fearful sell.

What the science does and doesn't say

It's worth being clear about the evidence. Research strongly supports one thing: bright, blue-rich light in the evening can delay the release of melatonin and push your body clock later. That's the mechanism behind the Blood Orange lens, and it isn't controversial. What's less settled is whether daytime blue from screens causes lasting eye damage - most eye specialists say everyday levels are low, and that dryness and strain owe more to how we use screens than to the light itself. But unsettled isn't the same as safe. With an organ that can't be replaced, unsettled is exactly where prevention earns its keep - the same bet you already make with exercise.

So we keep our claims where the evidence is. A blue light lens can make screen hours more comfortable, and it can protect your wind-down at night. It is not a treatment, and it won't fix a sleep routine built around a bright phone at midnight. Used for what it's genuinely good at, though, it earns its place.

Common questions

Do blue light glasses help with headaches or eye strain? We don't claim they do. The evidence there is genuinely mixed, and we would rather say so than sell you a promise. What our lenses are built to do is manage which parts of the spectrum reach your eyes at which hour. If you have persistent headaches or sore eyes, see an optician: there are several possible causes, and glasses of any kind may not be the answer.

Are they safe to wear all the time? Yes - there's no harm and no dependency. The only caveat is the morning: you don't want a blue-blocking lens on early in the day, when daytime light is actually good for you.

Will they help me sleep better? Indirectly. By keeping the daytime signal out of your eyes in the last hours before bed, the Blood Orange lens helps your body wind down on schedule. It works best alongside dimming your screens and a consistent bedtime.

Do children need blue light glasses? Most don't need them for screens, but many benefit from proper sun protection outdoors. If a child spends long evenings on a tablet, an evening-friendly lens can help - fit and durability matter most.

Are cheap blue light glasses just as good? Sometimes the frame is, but the lens rarely is. The value is in where the lens filters and whether that's measured. A cheap "blue light" coating with no data behind it may do very little.