Showing posts with label cornea. Show all posts
Showing posts with label cornea. Show all posts

9/01/2009

Benefits for cornea dream


The hypnagogic-sudden and involuntary movement of eyes closed during sleep-is beneficial because it is the only way in which the cornea to be ventilated during sleep.

By having their eyes open, the cornea-layer and transparent tissue in front of the eye area, receives an adequate supply of oxygen. The air also cools a thin layer covering the aqueous humor fluid found in a chamber behind the cornea. By cooling the layer, producing an agitation and the movement carries oxygen from the iris, with a constant supply of blood to the cornea.

But when our eyes are closed-eye and the area still, "the story is different. The oxygen is slowly coming to the cornea by diffusion from the iris or conjunctiva, the membrane that lines the inside of the eyelids. The oxygen is insufficient. But the dream saves everything, because at the time hypnagogic, sudden eye movement during sleep, oxygen and ventilation to reach desired levels.

4/23/2008

Red eyes

The redness shows up in all the forms and sizes, although you are only worrying if you persist more than two days, or you accompany of pain or of any type of secretion.

The good known cause is the conjunctivitis, very contagious infection. It can also be a cause a pool with a lot of chlorine, or a break of a blood vessel, among other.

To prevent it or to alleviate the red, tearful eyes or with itch, you are to have much care with the products of cleaning. You should only be tried to use handkerchiefs descartables and soaps, cosmetics and detergents without perfuming; you are very probable that the cause is an allergy to those products.

You are also to ventilate the eyepiece globes at nights. The continuous use of contact len produces a rub in the cornea, and ésto it can cause fissures that take to an infection; the eyeglasses are also a barrier for the oxygen and they encourage the development of bacteria. for that reason, you are fundamental to retire them during the night.

Also, you always suit to be protected with specific products. The artificial tears that are bandaged without necessity of prescription physician, can alleviate the red eyes because of the dry air or for the rooms full with fume.

12/16/2007

Conjunctivitis

The conjunctivitis is the inflammation of the conjunctival one whose nature is almost always of extraneous origin, and there are them of diverse classes. They receive the microbial agent's name that produces them and they can be catarrhal, purulentas, membranous, flictenuares, among other. One can suffer in an acute or chronic way, but the exact diagnostic determines it the oculist.

If he/she doesn't get complicated the cornea, the conjunctivitis sick person it notes the appearance of foreign bodies, nuisances to the light or fotofobia, pain, difficulty in the visual effort and fleeting enturbiamiento more or less repeated of the vision, with general ledger or pettier secretion of exudates that can be filiform, serous or purulentos, according to the conjunctivitis class that is suffered. to the awakening, the lids are more or less sticky, edematosos and red. The slot of the lids diminishes of size and the conjunctival tumefacta is observed, red and frequently with petty ecchymosis, that is to say, by way of petty haemorrhages localized in the funds of sack conjuntivales.

For the treatment of these conjunctivitis, diverse collyriums can be used that exist in the market: of astringent type for the filiform secretions, sulfamidados in the serous exudations, and antibiotics in the forms purulentas. Nevertheless, it should be had it enters that of not being appraised an immediate improvement, it is preferable to consult to the expert who will determine the conjunctivitis type and their perfect treatment and cure exactly forthwith.

He/she suits to remember that the conjunctivitis chronicles or not well treated they are much more difficult of curing and they can produce complications in the cornea. In the children, more specifically in the newly born ones, special care should be had, making sure that an obstruction of the channels excretoras doesn't exist. Be like outside, he/she should be treated the conjunctivitis as soon as possible to avoid serious complications in the cornea that you/they can affect in the future to the vision. The conjunctivitis gonocócicas, diftéricas or variolosas, they are extraordinarily serious for who suffers them.

Non debit side to forget the conjunctivitis tracomatosa that although in the last years it has fallen vastly in importance, they continue existing cases in an endemic way, susceptible of infection and of chronic path, as the spring conjunctivitis that charges vigor annually in the station changes.

Finally, he/she suits to keep in mind that the conjunctival one is susceptible of suffering different tumors, benign or malignant, for what you/they should not be neglected never, although they don't produce pains and not even nuisances. It is advisable to consult to the family doctor who will indicate the convenience that he/she sees them the oculist.

A curious formation conjuntival, in general benign that usually leaves of the interior angle of the eye toward the cornea, with trend to cover it, it is the pterygium, called this way by their form and light transmission that make it similar to the wing of an insect. If this pterygium of dilatory path, is progressive, it requires surgical treatment.