Contact lenses : the salvation of modern man

Millions of people choose glasses contact lenses.These small plastic or silicone disc is relatively safe and help to effectively cope with various visual impairments.

contact lenses worn directly on the eye, where they "float" on a thin film of tear fluid, which is formed on the surface of the cornea.Choose the appropriate lens will ophthalmologist.Not only does it measure visual acuity, but also orient you in the vast ocean of modern ophthalmic devices.

General

Eye Dress directly on the eye, where they "float" on a thin film of tear fluid, which is formed on the surface of the cornea.

choose the right lens you will eye doctor.Not only does it measure visual acuity, but also orient you in the vast ocean of modern ophthalmic devices.

hard (dense) contact lenses

  • traditional hard lenses from polymethylmethacrylate made of transparent plastic.They help to correct vision without any distortion, but less comfortable to wear.
  • Rigid gas permeable lenses are more comfortable .Some of them can be worn for up to a week and did not shoot at night.

Soft contact lenses

  • Lenses day wearing must be removed and cleaned before going to bed.They are stored in a special solution for contact lenses, and in the morning dress up again.Such lenses need to be updated at least once a year.
  • Lenses prolonged (extended) wear can be continuously worn for a week without removing them at night.However, such a mode of use may be inconvenient, but also increases the risk of irritation and damage to eyes.
  • Interchangeable lenses not allowed to take off in a few weeks, after which they must be replaced with a new pair.

Why

need

contact lenses

?

Most people opt for the convenience of the lens.In addition, unlike glasses, they allow the person to look natural.Contact lenses are used for so-called correction of refractive errors.This visual disturbances, which include nearsightedness (myopia), farsightedness (hyperopia), astigmatism and presbyopia.Lenses to correct astigmatism are called toric

.Usually they are made to order, subject to the disorder of each particular case.

Moreover, contact lenses can be used by people who were operated for cataract, when the "native" clouded lens is removed.Also, the lens used in the treatment of certain eye diseases such as keratoconus (thinning and changing shapes on the corneal cone), and traumatic or infective corneal damage.

Especially for people with myopia and presbyopia (age-related near vision) developed

bifocal contact lenses.In addition, each lens allows a person to see distant objects and simultaneously read or work with similar objects.If bifocal lenses do not suit you, the ophthalmologist may recommend

monovision

.At the same time for one eye chosen lens for the correction of myopia, and for another - to correct farsightedness.Many people who have discovered the monovision, able to adapt to it.And yet, this correction method is not without drawbacks.Since each eye separately operates, it gives binocular vision, which in turn leads to defective perception of depth.In other cases, the correction of presbyopia, the doctor may recommend a combination of reading glasses with contact lenses for distance vision.

Who can wear contact lenses successfully?

  • People with myopia has reached such high values ‚Äč‚Äčthat the necessary correction of the time.Those who wears glasses occasionally, much less use of contact lenses.
  • People with strong motivation.Wearing lenses involves some discomfort when you put on and take them off.In addition, it takes time to get used to the new device, as well as to learn the rules of storage and care of the lenses.
  • People who play sports or perform such work, in which the wearing of glasses is difficult or even dangerous.

Contact lenses can not come to a man if:

  • He can not or will not properly care for them
  • It is difficult to put on the lens, for example, with severe arthritis with lesions of hand joints, or other diseases thatlenses complicate manipulation.
  • There are a variety of diseases, such as uncontrolled diabetes or hyperthyroidism.It's hard to wear a lens case with allergies, asthma and other chronic lung diseases.
  • the presence of the syndrome of "dry eye" or by the cornea problems (eg, chronic infections or ulcers).Difficult to wear contact lenses and those with Sjogren's syndrome (a condition in which impaired function of the exocrine glands, including lacrimal, and salivary).
  • job involves exposure to vapor or particles of chemical compounds that can penetrate or be deposited on the lenses (e.g., dust, paint, chemicals in the form of a spray or hair lacquer).

the lenses are suitable for children?

infants and young children contact lenses are usually prescribed in exceptional cases for the treatment of certain diseases, such as aphakia (congenital absence of the lens), amblyopia ( "lazy eye"), and severe disorders of refraction.Many teenagers prefer lens glasses, especially if they are teased at school.However, it is important to remember that in adolescence lenses have to change very often, which is associated with age-related changes in the eye up to 20 years.

dangerous to use contact lenses?

lenses have a slight adverse effects, which, however, can irritate some people.But in general, the risk of infection or other complications is extremely low.

Wearing contact lenses may lead to the following disorders:

  • dry eye syndrome
  • Violations of the cornea, such as swelling and blurred vision.The reasons for this lie in the lack of oxygen supply to the cornea (hypoxia), scratches, change shape and infections of the cornea
  • an allergic reaction to the components of the solution for contact lenses
  • inflammation of the eyeball tissue
  • Inflammation of the century, leading to its swelling and difficult wearing lenses
  • Education in sediment lenses, which increases the risk of infection

Part of the problem occurs when you use a certain type of lens.The solution lies in more frequent cleaning and changing of the solution, and in some cases - and in the change of the type of lenses themselves.In addition, the cause of the problem often lies in the failure to comply with the instructions for use (wear of time, disinfecting, storage).Do not forget that the health of your eyes is only in your hands!

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