When treating children's strabismus with Fresnel glasses, it is necessary to go to the doctor for diagnosis every 1-2 months. Depending on the current optical characteristics of the eye, the specialist may prescribe other corrective means, since the state of vision changes with this method of strabismus treatment.
How is paralytic strabismus treated?
Squinting is an eye disease in which the symmetrical alignment of the eyes is disturbed and the eyes cannot focus on an object at the same time. An original form of squinting is paralactic squinting. Let's look at the causes of this pathology and effective hardware and surgical treatments.
When we look at an object, the light rays reflected from it strike corresponding points in the central area of the retina and are then transmitted via the optic nerve to the cortical areas of the brain, where they are assembled into a single spatial and color image. This property is called binocularity.
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With paralytic strabismus, binocular and stereoscopic vision is impossible. When one eye deviates from its visual axis, the image in that eye meets different points on the retina, preventing the brain from combining the images from both eyes. In such cases, double vision often occurs. To eliminate the inconvenience, the brain begins to 'read' information from only one visual organ. As a result, the affected eye is completely decoupled from the visual process.
Causes of paralytic strabismus
In contrast to simple strabismus, which usually occurs in childhood due to existing visual disturbances, the paralytic form mainly affects adults.
This pathology leads to the paralysis of one or more oculomotor muscles and has the following causes
- various eye injuries;
- craniocerebral injuries;
- infectious diseases;
- poisoning;
- vascular diseases;
- eye tumors, etc.
All of these disorders affect the nerves responsible for muscle contraction. There are three of them in total:
- The oculomotor, which allows us to turn the eyeball in different directions: up, down, towards the nose.
- The block nerve, which allows us to rotate the eyeball towards the inferior temporal angle.
- Inversion nerve – this nerve is responsible for rotating the eyeball toward the temple.
- squinting in adults.
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