excessive tear secretion
Introduction
Introduction to excessive secretion of tears Excessive secretion of tears is the result of hyperfunction of the lacrimal gland, but the meaning of tearing and tearing caused by it is different. In general, there is no adverse reaction except that the tears are constantly wiped off. A small number of patients may have conjunctivitis, blepharitis and diarrhea. Normal human eye secretions mainly come from lacrimal glands, meibomian glands, mucus secreted by ocular surface cells, and exfoliated ocular surface epithelial cells. Mostly transparent or pale white, usually not easy to detect. Due to the small amount of secretions, it can be discharged from the lacrimal passage in time without causing eye discomfort. When certain diseases occur in the eye, the amount of eye secretions changes or the trait changes. Usually, when people notice a significant increase in secretions, they will feel a series of discomforts, such as difficulty in blinking in the morning and blurred vision. At this time, in addition to the above, the components of the secretions may contain more exfoliated tissue cells, inflammatory cells, vascular exudates, pathogens, and the like. basic knowledge The proportion of sickness: 0.02%-0.07% Susceptible people: no special people Mode of infection: non-infectious Complications: conjunctivitis, eyelid eczema
Cause
Excessive secretion of tears
There are many reasons for excessive secretion of tears:
1, physiological reflex: due to emotional impulses, vomiting, coughing, yawning can appear excessive tears.
2, neurological reflex: due to chemical or physical stimulation of the conjunctiva or cornea, such as dust-like foreign body, irritating gas, cold, heat, strong light and other stimuli can cause nerve reflex tears, such as nasal cavity, sinus, All aspects of the oral mucosa are stimulated by corrosive gases, mechanical factors, etc., and can cause reflex tearing through the trigeminal nerve.
3, drug-induced reactions: due to the application of strong parasympathetic stimulants such as carbachol, neostigmine and organophosphorus pesticides and other chemical agents cause drug-induced tearing reaction.
4, the lacrimal gland itself lesions: such as lacrimal gland cysts, lacrimal gland tumors and Mkulicy syndrome early tears, but lacrimal gland inflammation does not necessarily tear.
5, central reflex: excessive mental excitement, such as sputum patients crying mostly such a newborn because the newborn has not yet established this mental factor, crying months after birth, no tears, only a few months after crying only tears.
6, symptomatic tearing: some systemic diseases, such as spinal cord hernia conjunctival congestion and tears (may be lesions on the facial nerve nucleus or trigeminal nerve stimulation), early tearing of hyperthyroidism also belongs to this nature.
Prevention
Excessive secretion of tears
Our eyes should be able to perform visual functions well, and healthy eyes should not be excessively fatigued. It requires not only the normal structure and function of the eyeball, but also the protection and collaboration of some accessory organs around the eyeball to operate freely.
Complication
Excessive secretion of tears Complications conjunctivitis eyelid eczema
A small number of patients may have conjunctivitis, blepharitis and diarrhea.
Symptom
Excessive tear secretion symptoms common symptoms tears tears eyes tingling
Excessive secretion of tears.
When a normal person washes his face in the morning or in the morning, he will find a very small amount of secretions in the corner of the eye, which is related to the reduction of eyelid movement during sleep at night, the reduction of tear secretion, and the slow discharge. Normal human eye secretions mainly come from lacrimal glands, meibomian glands, mucus secreted by ocular surface cells, and exfoliated ocular surface epithelial cells. Mostly transparent or pale white, usually not easy to detect. Due to the small amount of secretions, it can be discharged from the lacrimal passage in time without causing eye discomfort. When certain diseases occur in the eye, the amount of eye secretions changes or the trait changes. Usually, when people notice a significant increase in secretions, they will feel a series of discomforts, such as difficulty in blinking in the morning and blurred vision. At this time, in addition to the above, the components of the secretions may contain more exfoliated tissue cells, inflammatory cells, vascular exudates, pathogens, and the like.
Examine
Excessive secretion of tears
Commonly done tests are: 1 lacrimal gland secretion function test to determine whether there is excessive secretion; 2 lacrimal passageway examination: if mucus or purulent secretions flow out from the lower tear point, there may be chronic lacrimal sac Inflammation; if there is bloody secretion overflow, consider the early stage of the lacrimal sac malignant tumor, and should pay enough attention.
Diagnosis
Excessive diagnosis of tear secretion
Excessive secretion of primary tears is rare and should be distinguished from obstruction of the lacrimal passage.
