Study of Change in the Size of the Punctum before Insertion and after Extrusion of a Punctal Plug and the Selection of an Appropriate Plug for Reinsertion
FREEMAN, JM. The punctum plug : Evaluation of a new treatment of dry eye. Trans Am Acad Ophthalmol Otolaryngol. 1975, 79, 874-878
WILLIS, RM. The treatment of aqueous-deficient dry eye with removable punctal plugs. A clinical and impression-cytologic study. Ophthalmology. 1987, 94, 514-518
MURUBE, J. Treatment of dry eye by blocking the lacrimal canaliculi. Surv Ophthalmol. 1996, 40, 463-480