Clear answers about lenses, vision and the research behind the promises.
Every article lists the studies it relies on and separates what the evidence supports from what it does not. When an extra is not worth paying for, we say so.
Does light bother you more than other people? FL-41 is a rose-colored lens tint that reduces the part of the light people with migraine are sensitive to. We explain what it does, how strong the evidence is, which tint to choose and how to get it in your own frames.
Love your frames, but the lenses are scratched or your prescription has changed? New lenses can be fitted into the frames you already wear. Which frames are suitable, when we advise against it and what it costs.
What research says about BlueBlock glasses, eye strain and sleep, and why Relenser does not recommend extras without convincing evidence.