Lens with astigmatism can be different. Still advantageously still used in some cases hard contact lenses. But they were replaced by soft toric lenses, which combine the cylindrical glass for correction of astigmatism
Astigmatism - modern methods
and spherical correction of myopia
Myopia - when visual acuity falls
Contact lenses with astigmatism
Violation of the right of sphericity of the cornea leads to impaired vision - it becomes blurred, indistinct because of the large number of foci formed as on the retina, as well as outside it. This is often accompanied by rapid eye fatigue, pain in the head and eyeballs, dizziness. To all of these unpleasant symptoms disappear, sometimes it is enough to choose the right glasses or contact lenses.
Today, for the correction of astigmatism are increasingly used soft silicone hydrogel toric lenses, which are made from the same materials as regular contact lenses, but also have distinctive features.
These two lenses have different refractive power meridian, which are at right angles to each other. In addition, the toric lens is best kept on the eyes and do not rotate. Available in different toric lenses intended for correcting vision in different types of astigmatism. They are convenient, comfortable and reliable.
Particularly suitable toric contact lenses for children with birth defects in the structure of the cornea. They are from an early age correction is required, and if it is not carried out, vision deteriorates due to the addition of strabismus
Strabismus - how to find the cause?
or amblyopia - reduced vision that can not be corrected. Amblyopia is considered one of the most severe complications of child astigmatism.
The constant wearing of glasses is not convenient for all children - they are broken, broken, lost, broken glass from the glasses can injure eyes. Toric contact lenses, replacing glasses - perfect solution.
Toric lenses for astigmatism - advantages
If a person has a degree of astigmatism, then it is difficult to wear glasses. He may experience bouts of headaches, dizziness, pain and discomfort in the eyeballs, feeling that his eyes covered with sand. Especially hard carry glasses people who first wore them as adults. In order to wearing glasses were more comfortable, doctors sometimes reduce them diopters, which adversely affects the visual acuity and may contribute to the progression of astigmatism.
Toric lenses cause much less discomfort, people quickly get used to them and almost no notice. In children, the image goes to the brain when wearing toric lenses, it is more natural. It even allows you to correct a high degree of congenital corneal astigmatism.
Toric lenses have a high tolerance binocular that makes them indispensable in the large difference in diopters between the eyes - they allow you to keep the binocular (both eyes) vision. Toric contact lenses are comfortable in sports, in business trips, while enjoying the outdoors, swimming in ponds and so on.
How to choose the right contact lenses with astigmatism
Wearing toric lenses with astigmatism only makes sense when they are properly matched. Otherwise, the lens (on, however, and points) do not bring benefit and harm, and will contribute to the progression of the disease.
When myopia and hyperopia
Hyperopia - than it is fraught?
for the purchase of lenses people need to know only one parameter - the number of diopters. When the number of diopters of astigmatism in addition to need to know the strength of the cylinder and the cylinder axis, expressed in degrees. Choose the correct toric lens can be a doctor.
But in addition to the selection is also important stabilization lens - fixing the position of the axes on the eyeball, otherwise the lens will rotate. Stabilization can be achieved in various ways, including thickening of the lenses in the lower parts thereof (method of the prismatic ballast) truncating the lower edge of the lens and so on. All of this also makes an ophthalmologist.
After selection of lenses is their man in a test mode for half an hour. And only when the lens is fully fit, it makes the individual lenses. On readmission doctor checks stabilization lens, check the vision in lenses and encourages the patient periodically be an appointment for an eye examination - maybe with the change of the lenses have to be replaced.
Wearing toric lenses, of course, it does not eliminate the astigmatism. But it is beautiful and comfortable way of vision correction. If you do not carry out the correction of astigmatism, you may develop complications, such as strabismus, chronic headaches and so on. Independently, without a prescription, it is not necessary to buy a lens - in this case, they will not benefit, but harm.