The eye produces tears at a rate slow and steady so that the eye moist and comfortable and function without the surface dries, but of natural causes or pharmacologic or behavioral (considering constant screens, for example) may induce dry eye and is a situation where the amount of tears is insufficient or the tears of an inappropriate type for the comfort of the eye.
The eye produces tears in two ways:
· Hard cases quiet comfort
· Heavy tears and many cases of eye irritation (such as entering a foreign body) or agitation emotions (crying)
Lacrimal membrane
The systematic and recurrent eye closure which spreads tears on the surface of the thin membrane helps visibility. And consists of three layers
· Oily mibomian glands produce applied and form the outer surface of the membrane reduces evaporation and surface.
· Middle water layer (tear) eye cleansing function of foreign objects.
· Mucosal layer produced by conjunctivitis and helps spread tears and matter if the eye.
The usual symptoms are dry, burning and irritation of the eye and feeling like the sand in the eye so'ha over today.
You can also "itching, scratchy, like acupuncture and eye fatigue.
Other symptoms include pain, redness, feeling a sense of pressure followed by clouds, and that behind the eye. There may be a feeling that something, like a speck of dust, inside the eye.
The resulting damage is harassing to the surface of the eye and increased sensitivity to bright light. Both eyes are affected by the drought.
As there may be discharge or lacrimal secretion clutch from the eye. Although it may seem strange, dry eye can cause flood the eye with tears, and it happens because the eyes were irritability. The patient could face a State of hyper-tears as if something had hit the eye or income.
These involuntary tears don't necessarily make the eyes look better because she's the kind where the secretion lacrimal for injury or damage to the eye, and those tears do not possess qualities or characteristics necessary palliative, lubrication to prevent eye dryness.
Causes of dry eyes
· Less tears with age
· Less than after menopause menstruation
· Some medical conditions
Some medications that will reduce the amount of tears
· Diuretics
· Beta blockers
· Antihistamine
· Nerve medications and sedatives
· Painkillers
· Eye operations that use x
And is considered a party or touching the conjunctiva fills the eye with tears, symptoms worsen during activities that contribute to reduce the possibility of continuous eye Eyelash, these activities include reading for a long time, exposure to computer screen, driving, or watching tv. And the symptoms increase exposure to dust or smoke.
In addition to dry areas with lower humidity, high altitudes especially with planes, and when exposed to air conditioners (especially cars), fans, geysers, or even use hair dryers.
While the symptoms during freezing temperatures, rain and foggy weather or in humid places, as when exposed to steam baths.
Symptoms of dry eyes
· Sensation of burning or stinging of the eye
· Itching
· A mucus shaped filament inside and around the eye
· Sensitivity to irritants (smoke, dust)
· Increase in watery eye (eye reaction result of drought intensify production of tears)
· Disturbed who put contact lenses
Although these cases treated with artificial tears, some patients may be harmed of preservatives in these droplets, require the use of artificial tears free of preservatives and can be used several times a day or even several times an hour.
Non-therapeutic procedures
· Minimize evaporation of tears by using your winter moisturizing
· Put the glasses in the outer atmosphere.
· Not to stay long in places of intensive heating
· Do not use a hair dryer
· Quit smoking (most effective)
· Vitamin intake by having (increased toxic, hypoxia nurse).
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