Symptoms, causes and methods of treatment by stafilm.
A person perceives objects through the cornea - the central part of the anterior surface of the eyeball, which has a dome-shaped shape. However, sometimes the structure of the cornea is not strong enough to support the rounded form, and the cornea acts outward, forming a peculiar cone. This condition is called keratoconus, or staphyloma.
Causes of statelessness
Quite often the cause of the development of the stefil is unknown. According to some studies, this disease is inherited and is more often diagnosed in people who already have health problems, such as allergies. Some believe that the cause of the keratoconus may be permanent eye wiping. However, more often, neither eye damage nor eye diseases can be reliably referred to as the cause of changes in eye tissue and the occurrence of staphylomy.
Usually keratoconus begins to develop in adolescence, although the debut of the disease is possible in childhood or even in patients over 30 years. Changing the shape of the cornea is usually not immediately, but slowly, for several years.
Some patients with keratoconus indicate gradual deterioration of vision. The rapid changes taking place in the eyes can both progress and stop at a certain moment. Most people with keratoconus suffer from both eyes, although not always equally.
Stroke and vision loss
Staphylomea does not lead to complete loss of vision. However, due to changes in the cornea, it is difficult for a patient to focus on a particular object without glasses or contact lenses.
The keratoconus may be dangerous for laser vision correction - by the method of LASIK (laser keratomyelosis) or PRK (photorefractive keratotomy). Even with a small keratoconus, operations with laser correction of vision are prohibited.
Diagnostics by stealth
During examination, the ophthalmologist may notice some changes. Sometimes the patient complains of the following symptoms that can be caused by the development of keratoconus:
- Sharp deterioration of vision on one eye.
- Duplication when looking at objects with one eye.
- Distortion, but not the blurriness of distant and close objects. The small details of the objects are clearly visible, but the shape and color are distorted. Subsequently, objects become blurred.
- Vivid colors are perceived as if they are shining.
The physician should measure the curvature of the cornea to ensure that the patient is actually keratoconus. To determine the curvature of the cornea use special tools. One is keratometry, which sends a ray of light onto the cornea. According to the form of reflection the doctor judges about the curvature of the cornea. In addition, computer tools are used to reproduce the three-dimensional form of the cornea, a process called the topography of the cornea.
Methods of treatment by stafilm
Only a specialist specializing in the treatment of eye diseases can prescribe proper treatment for a patient with a keratoconus. Usually therapy begins with the selection of glasses. If this is not enough for normal visual perception, it may be advisable to wear rigid contact lenses. In some cases, surgical intervention is shown.
Keratoconus causes blurred vision in two ways. As the shape of the cornea to change with rounded conical, smooth surfaces are slightly uneven. Such a phenomenon is called incorrect astigmatism. Since the anterior part of the cornea is expanding, the short-sightedness begins to develop, that is, only the adjacent objects are clearly visible, while all the distant objects are blurred.
Goggles can turn sharp vision with a keratoconus of moderate severity. In some cases, hard contact lenses are required.
Surgery with stafilem
For most patients with keratoconus all necessary treatment is proper selection of glasses or contact lenses. However, sometimes the state of a keratoconus worsens so much that even contact lenses do not help to improve visual perception. Sometimes she stafilema or use contact lenses lead to clouding of the cornea. In this case, corneal transplantation is recommended.