You missed the important bit. From the abstract: > The data suggest that the blue component of the white-LED may cause retinal toxicity at occupational domesti

You missed the important bit. From the abstract: > The data suggest that the blue component of the white-LED may cause retinal toxicity at occupational domestic illuminance and not only in extreme experimental conditions, as previously reported. The domestic illuminance they used was only 500 lux, which they describe as the "domestic classic light intensity".