- What is a stroke in the eye?
- What are the causes?
- How do you recognize him?
- Who is at risk?
- What can you do about it?
The second most common retinal vascular disease is retinal vein occlusion, also called stroke in the eye. How can you prevent it and what to do if it occurs? Is there a cure?
In the eye, there is only one artery that draws blood and one vein that draws blood. It will now be this vein stuck, the blood cannot drain. It spreads to the retina. However, as blood continues to enter, massive, bloody thickening of the retina occurs. The problem: it’s usually not painful. Often you only notice one deterioration visual acuity or field of vision are limited. Vein occlusion leads to a lack of oxygen in the optic nerve tissue. As a result, the neurons of the optic nerve, the connection between the eye and the brain, die. These cells cannot regenerate. If left untreated, this can lead to blindness within a few months.
Exactly causes are not yet clarified. But the risk factors are essentially the same as those of a stroke: high blood pressure, diabetes, or high blood lipid levels. But other factors can also be the cause:
- eye trauma
- 40 years and older
- To smoke
- Disease of the carotids (carotid arteries)
- kidney disease
- inflammation of blood vessels
The following symptoms may indicate ocular infarction:
- Loss of all or part of your vision
- Patients are unable to see with their eyes
- Blurred or distorted vision
- Blind spots in the field of vision
It happens that the view returns when it was only a slight block. Anyway, in any case, here it is a doctor or nurse to avoid possible permanent damage.
The most common form is the papilinfarkt. This is a circulatory disorder, such as a blockage in the vein, which affects women more often than men, and most patients are over the age of 50. The causes here are vascular inflammation (giant cell arteritis) or vascular calcification. Symptoms are often severe headaches, which usually occur on both sides. Excessive and painful hypersensitivity of the scalp or pain in the tongue when chewing is also observed here. The condition deteriorates very quickly, resulting in double vision and loss of facial features. Pain in the upper shoulder and neck or hip area is also reported in about half of patients. However, the eye itself remains painless.
Diagnosis and what to do
For complaints or acute loss of vision it is important to consult an ophthalmologist as soon as possible. This person then makes the diagnosis. First of all, the story is important. What diseases are present classified at risk? What other factors are there? The pupils are opened with eye drops and checked with an ophthalmoscope blocks or sought bleeding. Further investigation:
- visual field measurement: Are there any interruptions or limitations?
- slit lamp: A stereoscopic study of the eyes.
- fluorescein angiography: A dye is injected into the arm, which diffuses into the bloodstream. Once in the retina, a special camera can be used to determine if and which blood vessels are blocked.
- Optical coherence tomography: The retina is expanded with drops and then the eyes are scanned. This creates a detailed image.
Tests may also be done to look for other causes that may be in other parts of the body.
As with a “classic” race, speed is of the essence here too. If the block can be cleared within approx. 100 minutes eliminated, permanent damage can be avoided. After four hours without treatment, vision is likely to be permanently damaged. But how is it treated?
- eye massage: The eye is massaged through the closed eyelid to remove the clot.
- carbon dioxide oxygen: A mixture of carbon dioxide and oxygen is inhaled. This dilates the arteries and increases blood flow to the retina.
- Paracentesis: A small needle is used to draw a few drops of fluid from the front of the eye, reducing pressure and increasing blood flow to the retina.
- drug: The blood clot can be removed and the eye pressure lowered by giving drugs.
what can prevention be made? Only about 10% of all those affected are under the age of 45. An eye stroke usually occurs due to another medical problem, such as diabetes or high blood pressure. Therefore, adjust checks the only way to reduce the risk.