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Amblyopia

Posted by Healthy Natural Life on Saturday, November 11, 2017

DEFINITION
Brain and eye work together to see. Light enters the eye and is converted into nerve signals that travel along the optic nerve to the brain. Amblyopia (Amblyopia), also called "lazy eye (lazy eye)," is the medical term used when the vision in one eye is reduced because the eye and brain are not cooperating as they should.


Amblyopia is a problem in children that occurs when one eye is weaker than the other. Brain chose to take pictures of the stronger eye and ignore the image from the weaker eye. This means that a child using a strong currency than a weak eye. If the weak eye is not used, then the weak eye is not able to develop good vision. This leads to reduced vision in the weaker eye. Amblyopia usually affects only one eye.

Amblyopia is a frequent cause of vision loss in children. Loss of vision occurs because the brain ignores the picture obtained in one eye. Vision loss can be irreversible if not diagnosed and treated before the age of 8 years. 

CAUSE
Conditions that can lead to amblyopia is every child's eye condition that prevents you form a clear and focused image or prevents the normal use of one or both eyes. This may occur if:
Refractive amblyopia.
Amblyopia can occur due to refractive errors were not corrected properly, usually in the form of farsightedness or astigmatism, especially if there is a large difference in refraction between the two eyes.
Strabismik amblyopia.
The presence of strabismus (crossed eyes) can also cause amblyopia, because the eye produces two images from each eye that does not fit (which is normally combined into one in the brain). This discrepancy makes a second image from each eye may not be combined in the brain, then the brain will suppress one of the images that exist and ignoring input from the eyes. In adults, the sight lines are fully developed, so that if there is a discrepancy of vision of each eye causing double vision (diplopia) and not the loss of vision in one eye.
Deprivation amblyopia.
This type of amblyopia occurs because of the opacity or cataract or disorders of the cornea bends light entering the eye.
Your child may be more likely to have amblyopia if anyone in your family have it, or if your child experienced a premature birth or low birth weight.

SYMPTOMS
In most cases, amblyopia does not cause symptoms. But your child may:
·         Has an eye that wanders or does not move together with the other eye.
·         Have eyes that do not move in the same direction or focus on the same point.
·         Crying or complaining with one eye closed.
·         Like closing one eye.
·         Squinting or tilting the head to see something.
·         Has the upper eyelid drooping.
Children with amblyopia may still be too small to be able to explain the symptoms are felt. Usually the parents or school teachers aware of the child's efforts to overcome his eyesight disorders.

DIAGNOSIS
Your child's doctor will do eye tests. If the test results indicate that your child's eyes have low vision in one eye, then the doctor may diagnose amblyopia after ruling out other causes first.
To assist the diagnosis, the doctor will ask about symptoms, whether any family members who have vision problems, several other risk factors that might like born with low weight, and whether your child has difficulty reading, see the blackboard at school, or watching TV.

TREATMENT
Treatment for amblyopia do with the way your child should use the weak eye. This will force the eyes to become stronger. Over time, this will improve vision in the weaker eye. This can be done by way of correction:
- Impaired eye refraction using glasses.
- Eye Patch (blindfold),
Often the doctor closed the normal eye with a means of closing the eye, forcing the child to see with the eye impaired.
- If the cause is strabismus (crossed eyes), the conditions that need to be corrected after the visual acuity of both eyes together.
- The presence of cataract or opacity in the eye may require surgical treatment.
The best treatment started before the age of 6 years and should begin before your child's vision has fully developed (around age 9 or 10 years). Treatment passing of the age, the treatment will be less likely to help, but might be able to improve vision in some cases. A child with amblyopia who does not get treatment may have poor vision throughout his life.
After treatment ends, be sure to do a follow-up eye exams for your child for amblyopia can return despite successful treatment.

PREVENTION
The earlier amblyopia or its risk factors are detected, then the more amblyopia may be prevented or corrected. For that, there should be regular checks to detect this disorder in children.

REFERENCE
- B, Albert W. Amblyopia. Merck Manual Home Health Handbook. 2006.
- S, Jonathan H. Amblyopia. Kidshealth. 2011.

- Http://www.webmd.com/eye-health/tc/amblyopia-topic-overview


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