What is strabismus or deviation of the eye and what are the symptoms and causes?

What is strabismus
Strabismus or divergence of the eye. The inability of the two eyes to maintain proportional equalization and collaboration with each other as a single device. If a person has a distortion of vision, one eye directly sees the object she is looking at, while the other eye has an inappropriate position in the opposite direction. This deviation may be divergent (entropy or convergent strabismus), outward divergence (exotropic or divergent strabismus), upward (hypertrophic) and ultimately down-flow (hypotropia).

Strabismus can be fixed or alternate. In addition, inconsistency may affect only one eye, which is called strabismus or abnormal one-sided vision. In addition, in both cases, both eyes may have an inconsistency, which is called intermittent strabismus.

The brain ignores the uneven vision of the eyes to prevent congenital and early childhood dysfunction, which usually leads to ambulopia or laziness. According to the Association of Pediatric Ophthalmology and Strabismus in the United States, roughly 4% of the total population is strabismus or deviation.


Signs and distortions of the eye
The initial sign of sway distortion is the visible imbalance in the eyes, where an eye outwards, down, up, or diverges to an angle of inclination. When the eye inconsistency is noticeable, strabismus is called large-angle. This term means that the angle between the line of sight of the eye and the eye is deviation. Other types of narrowing eyes that are less visible are called small-angle strabismus.

In general, stagnant large angina does not cause symptoms such as elongation of the eye muscles and headaches, because in this type of brain deviation it is generally not an attempt to direct the eyes. Because of this, large-angle strabismus will result in severe bruising, ambulopia or laziness if left untreated. Small angle strabismus, which is less noticeable, is more likely to cause symptoms of visual impairment, especially if it is intermittent. In addition to headache and other eye pressure, the symptoms include:

Inability to read easily
Fatigue while reading
Unstable sight
Vision with uncontrollable vibration
If the narrow angle striic is steady and one-sided, it may lead to significant ampulopy in the eye.

What causes deviation in the eye?
Some congenital children have an ocular disease called congenital strabismus; however, in many cases, the cause of the disease is not precisely defined. You may have a problem with the nervous system that controls the muscles of the eye. Each eye has six external muscles that control the position and movements of the eye. In healthy eyes, these muscles work in perfect harmony. The presence of a tumor or other eye disorders may also lead to distortion in the eye.

If the divergence of the eye does not show until adulthood, it will ultimately lead to double vision. If an adult's eyes get distracted without warning, they may put him in dangerous situations such as stroke. For this reason, referral to the physician is even necessary in the event of a once-in-a-dumb in the eye.

Young children can treat double vision by putting pressure on the eyes of the weak eyes. In the absence of double-blind treatment for children, this problem will ultimately lead to ambulatory or lazy eye. In this disease, perception and environmental perception are affected. In addition, this disease may cause pressure on the eyes and headaches in adulthood. In the absence of a childhood divorce, one may forcibly depart from an adult's eyes in order to move his head in different directions to see the objects around him in order to be able to see the objects around him correctly.

Genetics also plays an important role in the disease. If a parent has strabismus, their children are more likely to be at risk.

Strabismus treatment
Strabismus treatment should be done as soon as possible. If the disease is not treated in a timely manner in children, adulthood may persist in the individual. Many adults who have deviation from the eye have congenital problems.

Treatment of strabismus in children is generally accompanied by a greater pressure on the weaker eye, by preventing the eyes from becoming strong. In some cases, double standards prevent this method from being used. In such a situation, the use of glasses can be effective. In any case, what's important is to treat the problem of swaying in children before they reach the age of 8, because then the child may lose sight forever.

In many cases, the treatment of steady-state deviation is an adult eye surgery for strabismus. The success of this operation depends on many factors, such as direction and severity of deviation. In some cases, even after the surgery, the abnormal vision of the adult remains intact. In strabismus surgery, it attempts to restore the muscles of the eye to its normal state.

Alternate and angular strabismus can in many cases be treated without surgery. For example, in a particular type of exotropy, the eyes of a person are normal in the presence of distant objects, but if they observe close objects, they tend to get out of the way. This problem is blurred vision, drowsiness and headache


  1. https://www.allaboutvision.com/conditions/strabismus.htm
  2. https://www.webmd.com/eye-health/strabismus


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Arash Shamsi

Arash Shamsi

آرش شمسی هستم. فلسفه می‌خوانم و می‌نویسم‌. ولی پیش از هر فلسفیدنی، بر سلامت می‌بایست متمرکز بود. چه آن‌که به قول شوپنهاور: «یک شاه بیمار از یک گدای سالم بدبخت‌تر است». امیدوارم آن‌چه که ترجمه می‌کنم، به کارتان بیاید.

I'm Arash Shamsi. A Writer. I write philosophy and live with philosophers. But health is more important than philosophy. In here, I translate the best articles about health, fitness and etc.