underdeveloped lacrimal glands
Introduction
Introduction No tears due to inferior lacrimal gland development, or due to the acquired autoimmune system disorders, disrupting the secretion of lacrimal glands, leading to tears and tears. No tears, an eye disease that cannot be cured, patients can only rely on medicated ointment to improve symptoms, or use special moisturizing glasses to avoid evaporation of water.
Cause
Cause
The reason is that chronic inflammation affects the muscular nerves of the lacrimal duct, which reduces the contractile force of the lacrimal duct. The inflammatory infiltration around the duct makes the wall weak, and the inflammatory stimulation promotes the secretion of tears, causing the gland to passively expand and form a cyst.
Examine
an examination
Related inspection
Lacrimal gland examination, lacrimal examination, lacrimal duct imaging
No tears or less tears. Diagnosis can be made based on clinical manifestations.
Diagnosis
Differential diagnosis
Differential diagnosis of lacrimal gland underdevelopment:
1. Congenital tear deficiency: seen in Riley-Day syndrome (familial autonomic dysfunction), manifested as no tears, corneal sensation loss and neurological paralytic keratitis, although the patient can be asymptomatic at first, but eventually develops into Typical perceptual keratoconjunctivitis is hot.
2, acquired no tears: can be caused by auditory neuroma or cerebellar brain surgery to destroy the lacrimal gland to secrete nerves. Tumors or inflammation of the lacrimal gland itself can also reduce the production of tears.
3, tear film disappears: tear film disappearance is one of the clinical manifestations of sjogren syndrome. Autoimmune conjunctivitis can cause ocular surface epithelial damage, decreased tear film stability, leading to ocular surface tear disease, which seriously affects vision. There are mainly diseases such as sjogren syndrome (SS), conjunctival pemphigus, Stevens-Johnson syndrome.
