Contact Lenses — a great alternative to glasses. They allow you to avoid these known problems "ochkarikov" as the reduction of the field of view, optical distortion and misting, the rejection of certain sports. Not to mention the pressure on the nose and ears as well as the appearance of the problems and inconveniences by kissing.
it is a foreign object in the cornea of the eye. Even the most perfect lens does not guarantee protection from complications associated with irritation, allergic or infectious inflammation of the cornea of the eye.
disrupt gas exchange in the cornea of the eye — which, again, can lead to the development of inflammation.
- can cause eye injury. This is especially true incorrectly selected contact lenses and cases of improper handling.
- require a very complicated procedure to replace them. It can be daunting, not only for children or the elderly, but also for some adults.
- quite expensive. Quality lenses, care products, drugs are much more expensive than glass correction. The cost of correction of contact for
2-3years compared to the cost of laser vision correction.
Also, as in the case of sunglasses, improper contact lenses may cause permanent fatigue eye and contribute to the progression of eye diseases such as myopia, astigmatism, farsightedness, etc.
Most complications when using contact lenses are associated with nursing mishandling and install, and they occur in continuous and long wearing.
The use of contact lenses for vision correction can lead to:
Syndrome of "red" eyes (conjunctivitis, etc.) — a common complication in most cases associated with wearing lenses malogazopronitsaemyh, dirty or inappropriate in size (incorrectly matched lenses). It may also occur when dry eye syndrome (tear deficiency). Any accompanying inflammation, corneal injury, allergic reactions in solutions.
corneal erosion. The reason may be torn, dirty lens, a foreign body, coming under the lens or accidental injury of the cornea lens taking pictures or getting dressed.
neovascularization of the cornea. There is, as a rule, with extended wear lenses malogazopronitsaemyh, with overnight wear, beyond the life of the lenses. The reason is a state of prolonged hypoxia of the cornea.
swelling of the cornea. May develop acutely — using toxic solutions or chronically — with extended wear lenses at night (due to hypoxia of the cornea). Acute corneal edema manifests an uncomfortable when wearing lenses, periodic or permanent blurred vision, blur the image.
a follicular conjunctivitis. Occurs when a prolonged wearing dirty lenses as inappropriate immune response to the breakdown products of proteins accumulating under the contact lens.
syndrome of "dry eye", which is caused by prolonged wearing incorrect lenses or individual intolerance. Leads to severe intolerance to contact lenses, redness eye, sensation of sand, debris eye, the appearance of fog.
An alternative contact lens intolerance are at their glasses, and laser vision correction.
On this Site www.ophthalmolog.ru