Problems With Contact Lenses

Contact lenses: A lens with a thin hemispherical shape made of transparent plastic material mixed with water to varying degrees angle is designed to latch onto the cornea. And purpose as the purpose of the lenses glasses in the function of improving the visibility (consideration) in the eye to correct refractive errors as minors and far-sightedness and astigmatism (astigmatism) and after consideration of the reading .

Should be available in the specifications to avoid problems with contact lenses following ideal:
1) Very light weight and small size to fit with the size of the cornea.
2) easy handling, and vision can be distinguished easily.
3) a high degree of purity and transparency.
4) to be very thin and polished edges minutes.
5) Do not bend willingly on their own.
6) flexible and non-stretchable.
7) is not affected by changes in weather conditions such as temperature, humidity and atmospheric pressure.
8) can be used for a long time.
9) Do not change color with use.
10) to be of the eye to be borne comfortably enough.
11) to be of a high water content.
12) allows the passage of tears to the cornea easily to feed the cornea and with a high oxygen permeability.
13) can be cleaned and sterilized easily.
14) free movement on the surface of the cornea.
15) can correct all refractive errors, eye (of defects).

It is necessary to follow the instructions of a specialist eye to be used correctly so as not to lead to problems with contact lenses and serious injuries in the eye.

Some of the problems with contact lenses, corneal ulceration, occur in users of contact lenses for long periods of time than prescribed for each type of lenses, for example, who use contact lenses during sleep daily, and follow the appropriate instructions.
Appreciates the possibility of hantavirus infection of the cornea in ulcerative users of contact lenses for smokers more than about 3-8 times, including in non-smokers.

Exposure to ultraviolet radiation a risk factor Allied with the blue waters; there are some types of contact lenses protective.

Note:
If you feel uncomfortable in vision after the introduction of the lens for an eye, make sure of the following:
1 - If the lens is in place, unplug them and make sure that no residue of fat or beauty products.
2 - It may be placed in the eye lens is not appropriate (left instead of right or vice versa).
3 - may be the lens upside down, which makes them uncomfortable.

4-contact Lenses may slip from its place or may enter a foreign object such as dust or dirt in the eye and cause pain and redder and abundant tears which requires removed and washed and worn again.

5-Wearing contact lenses for a longer period may cause the appearance of some signs and symptoms such as: pain, eye redness, itching increased secretion of tears, sensitivity to light.

- You can remove them immediately if you experience problems with contact lenses the following:

• itching or burning or tingling in the eye.
• feeling of a foreign body in the eye.
• The presence of abnormal secretions in the eye.
• flushes excess eye.
• blurred vision or the appearance of rainbows or halos around objects.
• Dry eye may occur in case of wearing contact lenses on a continuous basis or for a period longer than necessary.
It could be any of the symptoms listed an indication of the serious condition such as infection or ulceration of the cornea, so it is necessary to follow the treatment and to avoid any serious damage to the eye.

- Some medications, such as on drugs, refrigeration and sensitivity to congestion, diuretics and of muscle relaxants, tranquilizers and treatments for diseases and dizziness associated with travel, may cause dryness of the eye or a growing sense of the presence of the lens.
You should not use eye drops during the use of contact lenses, if necessary, one can use the drops before using the lens not less than half an hour.