Authors: Yuan Qing, Shao Yi DOI: 10.3760/cma.j.cn115989-20200112-00020 Published 2023-03-10 Cite as Chin J Exp Ophthalmol, 2023, 41(3): 289-291. Abstract [Download PDF] [Read Full Text] The punctal plug is a small implant inserted into the tear ducts, which is currently the main clinical […]