What is farsightedness? Causes of violations of vision? How to treat hyraidity? Answers to these questions you will find in the article.
Content
What is farsightedness
Falcastness (hypermetropium) is a violation of vision in which
man sees bad near and well enough. However, when
high degree of ralline sick may well see and deleted
Items.
Falcastness usually arises due to the fact that the eyeball has
Incorrect shape, it is as if compressed along the longitudinal axis. As a result
The image of the subject focuses not on the retina, but for it.
Falnamest man can keep the text very close to the eyes,
Because it increases the image of the text on the retina. but
The image does not get better, it is simply increased. Patient often
Pushed, trying to help accommodation (the ability of the eye to be adopted to different distances), which can contribute to the development of inflammation of the muzzle of the shell of the eye, along with a constant rash
Muscles.
With long work near hypermetrops, complaints may arise
on fatigue, pain in the eyes, headaches, tearing, burning in
Eyes, tingling in the eyes. There may be unpleasant sensations when
look at the light or intolerance of bright lighting. It is called
Accommodative Asthenopia. Accommodative Asthenopia is expressed by the more,
the greater the extent of hypertropy.
Falnarity is three degrees and is determined by quantity
diopters that lack the hypermetropic eye to become
Emmetropic:
- Hypermetropy of a weak degree - up to 2.0 diopters
- Middle Hummetropium - up to 4.0 diopters
- Hypermetropia high degree - more than 4.0 diopters.
With hypertropy of a weak eye with accommodation
copes with his task. And with hypermetropy medium and high
degree required correction and for Dali, and for close distances.
How to treat hyraidity
Unfortunately, therapeutic methods of treating hyperidity, as well as
myopiasis currently does not exist. Correction of hyperopia
produced with glasses or contact lenses. Radical
Cure hypermetropia using a surgical operation.
Surgical methods of hypermetropy correction are aimed at gain
optical eye power to make the rays of light focus on
Retid. Currently the most common surgical
Operations for the treatment of hyperopia are laser
thermal coatoplasty (LTK), replacement of transparent lens, Lasik,
Implantation of a positive lens and thermo-coagulation (TKC).
