Malbouisson J M, Bittar M D, Obeid H N, Guimarães F C, Velasco e Cruz A A
School of Medicine of Ribeirão Preto, University of São Paulo and Institute of Physics, Brazil.
Acta Ophthalmol Scand. 1997 Jun;75(3):290-4. doi: 10.1111/j.1600-0420.1997.tb00776.x.
Using scintigraphy, we have studied the lacrimal drainage from the conjunctival sac of normal subjects and patients who have undergone dacryocystorhinostomy. A mathematical model of drainage was constructed that accurately described the complete activity curves for both groups. The initial rate of drainage was shown to be a relevant parameter to characterize drainage, and it was found to be different from normals to patients, indicating that the lacrimal pump mechanism is affected by dacryocystorhinostomy.
