Blue Light Day Sync
- recoverbyinfo
- Mar 28
- 3 min read
75% Blue Cut | 95% Visible Transmittance
Introduction
Recovery Blue Light Day Sync lenses provide 75% blue cut across the specified blue‑light band while maintaining ~95% visible‑light transmittance for clear, near‑natural vision. This balance reduces a substantial portion of short‑wavelength energy from screens and indoor lighting while preserving accurate color and contrast for all‑day use. Percent attenuation refers to reduction across a defined wavelength range, not to a single wavelength value.
How Day Sync benefits users
Day Sync attenuates a meaningful share of short‑wavelength (blue) light associated with visual fatigue and digital screen exposure, helping reduce eye strain and improve visual comfort during prolonged use. Its high visible‑light transmittance makes it suitable for work, study, reading, and media consumption without significant color distortion. Used in the evening, Day Sync lowers blue exposure while remaining practical - however, for maximal melatonin protection we recommend switching to a higher‑attenuation, such as Recoverby Night Sync lens, in the final 1–2 hours before bedtime.
Recommended use
All‑day indoor wear: intended for continuous daytime use at work, school, and home.
Evening use: suitable for earlier evening screen exposure; for the last 60–120 minutes before bedtime, consider our Night Sync (98.5% blue cut) for stronger circadian protection.
Reading and tasks: ideal for activities requiring accurate color and fine detail due to ~95% visible transmittance.
Safety and precautions
While Day Sync preserves near‑natural colours, it is still advisable not to use when driving.
Children: Do not fit tinted lenses to children routinely without professional advice; consult a pediatrician or pediatric ophthalmologist.
Clinical conditions: Day Sync is an adjunct for comfort and partial blue reduction. For persistent sleep disorders, severe photophobia, or ocular symptoms, advise customers to seek professional evaluation.
Trial plan for customers
Baseline: record typical work/screen habits, symptoms of eye strain, and sleep onset over 7 days.
Trial: wear Day Sync during normal daytime activities and evening screen use for 7 days without changing other behaviors.
Evaluate: compare eye comfort, visual fatigue, and any changes in sleep onset; if additional evening protection is desired, trial Night Sync for the final 1–2 hours before bed.
Product care and specifications
Optical performance: ~75% attenuation, ~95% visible transmittance for TV/indoor viewing.
Care: clean with a microfiber cloth and lens cleaner; store in the supplied case when not in use. Avoid extreme heat and mechanical stress to maintain lens coating and frame integrity.
Technical note — interpreting “75% blue cut”
“75% blue cut” denotes approximately 75% reduction in energy across the manufacturer‑defined short‑wavelength band (commonly within the 400–500 nm region). This reduces, but does not eliminate, circadian‑relevant energy near ~460 nm. For customers seeking near‑complete short‑wavelength attenuation in the evening, recommend Night Sync (98.5% blue cut) instead.
Limitations
Day Sync is designed for comfort and partial blue reduction; it is not a clinical treatment for insomnia or a substitute for medical advice. Efficacy for sleep improvement varies by individual and behavior. Encourage customers to combine Day Sync with good ergonomics and sleep hygiene.
Not recommended
Do not rely on Day Sync as a replacement for certified sunglasses outdoors.
Do not use Day Sync alone to treat chronic sleep disorders - refer to medical professionals if necessary.
Do not fit children with tinted lenses without professional consultation.
Do not drive with any eyewear that impairs color perception or visibility under adverse conditions.
At Recovery, we stand behind Blue Light Day Sync as a thoughtfully engineered solution for day‑to‑day visual comfort and partial blue‑light reduction. Its 75% blue cut and ~95% visible transmittance deliver an effective compromise between protection and clarity, making it ideal for professionals, students, and anyone spending long hours in front of screens. Use Day Sync as part of a complete eye‑care and sleep‑hygiene routine; for stronger evening protection, pair it with Recovery Night Sync.
Check out our catalog for more sleep & wellness products:
