Gilani C, Yang A, Yonkers M, Boysen-Osborn M (2017) Differentiating Urgent and Emergent Causes of Acute Red Eye for the Emergency Physician. West J Emerg Med. 18(3) pp 509-517 [Accessed Nov 2020]
Click https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5391903/ link to open resource.