Lawrenson J G, at al. (2017) The effect of blue-light blocking spectacle lenses on visual performance, macular health and the sleep-wake cycle: a systematic review of the literature. OPO. Volume 37. Issue 6. Pages 644-654. [Accessed Jul 2020]
Click http://onlinelibrary.wiley.com/doi/10.1111/opo.12406/full link to open resource.