Bickerstaff's encephalitis is a rare inflammatory disorder of the central nervous system, first described by Edwin Bickerstaff in 1951. It may also affect the peripheral nervous system, and has features in common with both Miller Fisher syndrome and GuillainâBarrÃ© syndrome. 1  1 Signs and symptoms.  2 Pathophysiology.
Pathophysiology. Tears are produced in the lacrimal gland and drain through the upper and lower puncta into the canaliculi and then into the lacrimal sac and nasolacrimal duct (see Figure: Anatomy of the lacrimal system. ). Obstruction of tear drainage can lead to stasis and infection.
Trace the pathway that the secretion of the lacrimal glands takes from the surface of the eye by assigning a. ! number to each structure. (Note that #1 will be closest to the lacrimal gland.) a. !____ Lacrimal sac c. ____ Nasolacrimal duct. b. !____ Nasal cavity d. ____ Lacrimal canals.