When we blink our eyelid makes the tears we produce extend through the eye forming a barrier that prevents the moisture in our eyes to evaporate. The problem comes when we do not produce enough tears or when the protective lipid barrier is damaged.
The tear film has 3 layers:
- Layer Lipid: is the outermost layer and is composed of the fats secreted by Meibomian glands. Its main function is to decrease the evaporation rate of the aqueous inner layer.
- Aqueous layer: is composed of water and provides oxygen to the cornea.
- Mucous layer: it contains mucin which is a kind of “mucus” produced by the conjunctival glands. This layer is sticky and that feature makes the tear may be longer in the eye.
The use of tablets and computers increases these symptoms. They dry their eyes, annoy because they appear redness, burning, gritty feeling … and makes us feel uncomfortable, so much so that sometimes it is difficult to continue working, especially in cases where computers are needed to do the task.
It is a disease related to pollution, excessive use of sight (for example when driving or watching a movie), using lenses, staying in dry environments (using air conditioning or heating), and in many cases, it is for Cause of age. The bigger we get, the more our eyes dry up. And even more so in postmenopausal women. And finally, if we take medications such as antihistamines or beta-blockers we can also suffer dry eye.
Ocular dryness is often associated with a lack of tear production or poor quality production, i.e. with little lipid layer.
Symptoms of Dry Eye:
- Feeling of having grit inside the eye.
- Have the sensation of making a great effort by closing the eyelids.
- Vision fluctuations.
Not being able to wear contact lenses because they bother.
How to deal with it
The fastest and most comfortable are tear supplements, that is, with artificial tears, Of slight forms of ocular dryness . In mild cases of ocular dryness, anti-inflammatory drugs (usually 0.05% cyclosporin A) or local steroids may be used, and even drops that may temporarily occlude the lacrimal area, which are silicones or collagen stoppers. Both eye drops and ointments or gels may be employed.
When the disease becomes more severe, it is necessary to resort to other methods. There are ways to stimulate the production of tears, treatments that must be done in an ophthalmological clinic in order to try to decrease tear evaporation. Within the surgical treatments I emphasize the lateral or medial tarsorrhaphy, because it is a simple technique that consists of the reduction of the palpebral opening and the occlusion of the tear point that make our tears do not evaporate so easily. Occlusion of the permanent tear point may also be performed.
One tip if much or use computers tend to have dry eyes is to use artificial methods like spray like Optrex® , which sets with closed eyes and can be used even with painted eyes or lenses on. This spray prevents the tear from evaporating our eyes and protects the eye barrier. The effect lasts about 4 hours and the application can be repeated after this time.