Astigmatism - a disease (ie pathology of view), which arises as a result of violations of the optical lens system.The essence of the disease is that the disease is not the image the lens is focused at one point, so there is a blurred and fuzzy picture.Astigmatism - is blurred vision, difficulty seeing the patient near and far.
Separate disease such types:
- Congenital astigmatism with the severity of 0.5 diopters.If the disease is greater than 1 diopter, the vision begins to decline, so you need to take medication.
- Acquired astigmatism is the result of trauma, injury and after surgery.
disease arises as a result of the curvature of the cornea is sometimes the lens.The cornea and lens are smooth spherical surface, but during disease spherical surface is disturbed.It may be a different curvature in different directions.During disease meridians corneal surface having different refractive powers, resulting in distortion.Different parts of the image focused on the retina, the other - outside of it, w
There are corneal and lenticular astigmatism.Corneal astigmatism affect vision ahead lenticular.This is due to the fact that the cornea has a greater refractive power.It provided three degrees of astigmatism - low, medium, high.
reason is the uneven curvature of the cornea or irregular shape of the lens.The disease generally has hereditary but is acquired.
Acquired astigmatism occurs in adults due to changes in the cornea, which can result from eye injuries, surgery, corneal clouding, and various inflammations.Poor expression of the degree of disease a person may not notice, but when smudged starts to bother, you should consult an ophthalmologist.If the degree of the disease does not exceed 0.75 diopter, the correction is not required.
Symptoms symptoms of astigmatism:
- pain in the brow portion;
- visual fatigue;
- sensation of "sand" in the eyes;
- tired of wearing glasses;
- loss of visual acuity;
- pain, redness, burning, seeing double;
- decreased vision;
- in the early stages of the disease there is a slight blooming of view, but we accept it for eye fatigue.
Each symptom can occur individually, or in combination with each other.At the first sign of the disease should consult an ophthalmologist.Diagnosis of the disease
- Comprehensive inspection.
- visual acuity.
- determines the degree of refraction.The procedure is performed by the shadow of the sample lenses with a spherical and cylindrical shapes.
- Held Biomicroscopy eyes.
- conducted research using Oftalmometres and ultrasound.
- To verify the presence and degree of corneal astigmatism held computer corneal topography.
need to treat astigmatism, as the disease can cause strabismus and reduced vision.Medical therapy includes several ways, depending on the extent of disease, type and age of the patient.With the purpose of treatment using points, laser, contact, and microsurgical correction.
first step in treatment is a glass correction.If special glasses (cylindrical) bring discomfort, then it made another correction with the use of astigmatic lenses.Lenses for such tasks - improve vision and can change eye color.
For complete elimination of the disease using laser correction.This is an effective method.The method is to change the cornea.Rehabilitation is fast and there are no complications.
Gentle therapy - eye drops.Assign a permanent treatment for complaints of fatigue, redness proteins.All medications are selected individually.