Behar-Cohen F, et al. (2014) Ultraviolet damage to the eye revisited: eye-sun protection factor (E-SPF®), a new ultraviolet protection label for eyewear. Journal of Clinical Ophthalmology; 8, pp 87-104 [Accessed Sep 2025]
Click https://pubmed.ncbi.nlm.nih.gov/24379652/ link to open resource.