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Nasolacrimal duct obstruction is the obstruction ... responds to surgical intubation of the entire lacrimal drainage system. This procedure should be performed only ...
In this procedure, a nasal endoscope is used to visualise the lacrimal sac through the nasal cavity. The bone covering the lacrimal sac is nibbled out. The medial wall of the sac is incised or excised, facilitating drainage of tears into the nasal cavity. This procedure avoids scarring.
Obstruction of the nasolacrimal duct may occur. [4] [5] [6] This leads to the excess overflow of tears called epiphora (chronic low-grade nasolacrimal duct occlusion). [7]A congenital obstruction can cause cystic expansion of the duct and is called a dacryocystocele or Timo cyst.
Dacryoscintigraphy (DSG), also known as lacrimal scintigraphy, is a nuclear medicine technique for imaging the lacrimal apparatus. It is used to identify obstructions, for example in the lacrimal duct , nasal cavity or nasolacrimal duct .
A dacryocystectomy is the surgical removal of a part of the lacrimal sac. [8] A dacryocystorhinostomy (DCR) or dacryocystorhinotomy is a procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function. [8] [11] A dacryocystostomy is an incision into the lacrimal sac, usually to promote ...
A dacryocystorhinostomy or dacryocystorhinotomy is a procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function. [ 33 ] [ 35 ] Canaliculodacryocystostomy is a surgical correction for a congenitally blocked tear duct in which the closed segment is excised and the open end is joined to ...
With time the cyst will outgrow the blockage. However, with chronic dacryocystocele, the nasolacrimal duct probing may be required to open the obstruction. Surgery may be needed to widen the tear ducts in order to reduce the blockage occurring in the eye area. The procedure for the surgery is called dacryocystorhinostomy, laser is used to ...
The lacrimal sac or lachrymal sac [1] is the upper dilated end of the nasolacrimal duct, [2] and is lodged in a deep groove formed by the lacrimal bone and frontal process of the maxilla. It connects the lacrimal canaliculi , which drain tears from the eye's surface, and the nasolacrimal duct , which conveys this fluid into the nasal cavity. [ 3 ]