Extremely high priority
Top ChoiceLight Health
The single easiest upgrade for your sleep.
Cost$12
TimeNone
EnergyEffortless
ImpactHigh
28Lower priorityEvidence: unproven
Blue light glasses
Priority Matrix
The numbers.
Four dimensions, scored 1–6, where six is always the good end: cheapest, quickest, easiest, highest impact. Priority is Impact squared, divided by what it costs you in energy, money and time.
Cost$30
Time-
EnergyEffortless
ImpactLow
How sure we are
UnprovenWidely claimed, not demonstrated.
Kept separate from the priority score on purpose: confidence in the evidence never raises how worth-it something is.
What we read
- Blue-light filtering spectacle lenses for visual performance, sleep, and macular health in adults
Cochrane Database of Systematic Reviews · 2023
Across 17 randomized trials, blue-filtering spectacle lenses probably make little or no difference to computer eye strain, and effects on sleep and macular health remain unclear.
- The effect of blue-light blocking spectacle lenses on visual performance, macular health and the sleep-wake cycle: a systematic review of the literature
Ophthalmic and Physiological Optics · 2017
A systematic review of randomized trials found no high-quality evidence that blue-blocking spectacles improve visual performance or sleep, ease eye fatigue, or protect the macula.
Research from City, University of London · University of Melbourne. We cite their published work. They have no involvement with Anew.
Where this falls down
Still unknown. Evening amber lenses worn as a way to dim light are a different intervention from clear 'computer glasses' marketed for daytime use — the latter is what this card is about, and that is what the reviews tested.
Topics
Where it fits.
Related products
The gear.
Products that share a topic with this intervention. Same matrix scoring, same restraint.
- Nice to have
Top ChoiceLight HealthSunrise Alarm Lamp
$40–120Wake to light, not noise — especially in winter.
Cost$40–120TimeNoneEnergyEffortlessImpactModerate
Keep going