Blinking Eyes

Blinking Eyes

It Is Advised To Be Cautious Eye Illness Supposed You Have Too Much Tears

Why people often shed tears: under normal circumstances, after each blink eyes, the tear secreted by lacrimal gland and deputy lacrimal gland will balance by the excretory system of tear or evaporation. Tears glasses will fill the entire surface of eyeball to keep it moist and comfortable and we do not feel tears. When lacrimal fluid secretes too much or there is something wrong with the lacrimal drainage system, we will feel our tears. There are many factors causing over secretion of tears, including mental stimuli.

The reflex stimulation of foreign body: the effects of cholinergic drugs and anti-cholinesterase agents, and other drugs; some eye diseases such as glaucoma, eyelids, conjunctiva, iritis and others. Or, trigeminal nerve and facial nerve stimulus. If too many tears could not be evaporated or defecated in time, it may hard for us to stop crying.

The excretory systems of tears have problems. Usually include abnormal, narrow or atresia puncta position, and there is stenosis and plug from tear duct to the nasal lacrimal duct. Or lacrimal dysfunction and others, leading to tears not be discharged, re This situation is particularly prevalent in the elderly. Usually show lacrimation induced by irritation of the wind. In a cold climate, the symptoms are increased. Even regardless of seasons, frequently flowing tears indoor and outdoor.

Snow blindness: it is also known as snow ophthalmia, mainly because the strong ultraviolet rays in sunlight are reflected by snow field to the eye cornea of people, leading to corneal trauma. Studies eye glasses have shown that the sun's ultraviolet radiation of 300 micron shines into the snow. If eyes were hitted by the reflected light, snow blindness could occur. And it may cause symptoms such as photophoby, lacrimation, swellings and pain, titillation, sense of eyewinker, etc. Therefore, you'd better wear sunglasses when you go out so as to prevent from stimulation by strong light to your eyes.

Chronic conjunctivitis, during autumn and winter, is one of the major causes of frequent lacrimation. It is divided into two categories of infectious and nonifectious. The former inflammation is caused by pathogenic microorganism. Besides, bacteria, virus, chlamydia and fungus may produce diseases. The occurrence of Non-infectious chronic conjunctivitis is mainly related to environment and the habbit to use eyes, and its prevalence rate is increasing day after day. Being stimulated by sand, dust, smoke, or harmful gas and frequetly staying up late, lack of sleep, smoke too much, with eyes fatigue lead to chronic conjunctivitis

Xeroma: dry eyes cheap prescription sunglasses results in lachrymation of the elderly. The dry and frigid winter has higher frequency of coming down with xeroma. It also make people decrease the secretion of tears and cause dry eye syndrome. If your ocular surface is injuried, your eyes will cause excessive tearing reflectively. Menopausal women, allergic rhinoconjunctivitis patients, those who had ever injuried by trachoma and those patients who have scar tissue on cornea, are all easy to cause tearing caused by dry eye syndrome. Nasolacrimal duct occlusion: many old people often cry because of nasolacrimal duct occlusion. The inlet of the nasolacrimal duct is at the lower eyelid near the nosewing, while the outlet is inside of the nasal cavity.

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