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.
The lacrimal glands are shaped a bit like an almonds, found in the upper part of your eye sockets. Youâve got two lacrimal glands, one located just above each eye. What does it do? The basic function of your lacrimal glands is to produce tears. The secreted tears are collected on the conjunctiva of your upper eyelid. Tears help to nourish and moisten your cornea (the outer layer of your eyeâs surface). They also keep your eye clean, and lubricate it to avoid irritation.