SPV DayTime glasses are designed to help reduce the impact of artificial blue light emitted by screens, LED lighting, and indoor environments.

They are ideal for people who:

• work indoors under artificial lighting,
• spend long hours in front of screens,
• want to reduce eye strain during the day.

Unlike many conventional blue light glasses, SPV DayTime glasses help reduce excess artificial blue light without blocking all of the beneficial light needed during the day.

This helps:

• Improve visual comfort,
• Reduce eye fatigue,
• Maintain a more natural color perception.

By helping reduce exposure to artificial blue light from:

• Screens,
• Computers,
• Phones,
• LED lighting,

you may experience:

• Greater visual comfort,
• Less eye strain,
• Fewer symptoms from prolonged screen exposure,
• Improved focus.

In addition, by allowing beneficial blue light to pass through, they help:

• Support natural alertness,
• Improve mood,
• Promote a balanced circadian rhythm.

Natural sunlight contains a full and balanced light spectrum.

In contrast, many screens and LED lights emit a narrow peak of blue-violet light around 455 nm, which may feel uncomfortable or fatiguing during prolonged exposure.

That is why SPV DayTime glasses are designed to:

• help reduce this excess artificial blue light,
• maintain natural color perception,
• improve visual comfort.

Many conventional computer glasses only reduce a small portion of the blue spectrum.

SPV DayTime glasses are designed to:

• more effectively reduce excess artificial blue light,
• reduce eye strain,
• provide comfortable vision without darkening the screen.

Whites may appear slightly warmer, without causing significant color distortion.

Yes. They can be a good option for people who are sensitive to:

• screens,
• LED lighting,
• intense indoor environments.

By reducing part of the most intense artificial blue light, they may help:

• reduce eye fatigue,
• improve visual comfort,
• lessen discomfort from prolonged exposure.

Yes, depending on the time of day:

• During the day: we recommend DayTime glasses, as they help reduce eye strain without significantly altering colors.
• At night: we recommend NightTime glasses, as they block 100% of visible blue light and a large portion of green light to help reduce the impact of screens on sleep.

It is not ideal.

The amount and type of light that should be reduced at night is different from daytime light. That is why SPV has developed two separate technologies:

• DayTime: for reducing excess artificial blue light during the day.
• NightTime: for deeper protection at night.

We do not recommend wearing DayTime glasses outdoors.

Natural sunlight provides important benefits for:

• energy,
• mood,
• circadian rhythm.

To get the most out of your glasses:

• wear them indoors during the day,
• when using screens or artificial lighting,
• and try to take natural sunlight breaks every 2–3 hours.

Yes. We offer DayTime glasses:

• without prescription, and
• with reading magnification:
  +0.5 / +1 / +1.5 / +2 / +2.5 / +3 / +3.5 / +4

Yes. There is scientific evidence supporting the benefits of reducing excessive artificial blue light exposure during the day to improve visual comfort and reduce eye strain in indoor environments.

Relevant studies include:

• https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013244.pub2/full
• https://journals.sagepub.com/doi/10.1177/25158414251412798
• https://www.cell.com/heliyon/fulltext/S2405-8440(22)01570-5
• https://digitalcommons.njit.edu/cgi/viewcontent.cgi?article=3389&context=theses
• https://pmc.ncbi.nlm.nih.gov/articles/PMC11685196/