1. Azuara-Blanco A., Burr J., Craig R., et al. Effectiveness of early lens extraction for the treatment of primary angle-closure glaucoma (EAGLE): a randomised controlled trial. The Lancet. 10/2016. 388: 1389-1397.https://www.thelancet.com/action/showPdf?pii=S0140-6736%2816%2930956-4 2. He M, Jiang Y, Huang S, et al. Laser peripheral iridotomy for the prevention of angle closure: a single-centre, randomised controlled trial. Lancet. 2019;393(10181):1609–1618. https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(18)32607-2/fulltext. 3. Lin YH, Wu CH, Huang SM, et al. Early versus Delayed Phacoemulsification and Intraocular Lens Implantation for Acute Primary Angle-Closure. J Ophthalmol. 2020;2020:8319570. Published 2020 Mar 24. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7152972/pdf/JOPH2020-8319570.pdf 4. Wright C., Tawfik M.A., Waisbourd M., Katz L.J. Primary angle-closure glaucoma: an update. Acta Ophthalmol. 2016 May;94(3):217-25. https://onlinelibrary.wiley.com/doi/epdf/10.1111/aos.12784 5. Sun X, Dai Y, Chen Y, et al. Primary angle closure glaucoma: What we know and what we don't know. Prog Retin Eye Res. 2017;57:26‐45. https://www.sciencedirect.com/science/article/pii/S1350946216300519?via%3Dihub