Anisocoria - pupils of different sizes : Causes
Encyclopedia Symptoms / / April 26, 2016
Anisocoria - is the medical term for unequal pupil size.The pupil is located in the center of the eye, or rather, in the center of his iris.It regulates the amount of light supplied to the retina of the eye more than in the dark, and smaller in bright light.
For a man is the norm, when the difference between the two pupils varies between 1 mm.This difference is almost negligible.
Children born with different sized pupils may not have any diseases.If other family members also have similar pupils, varying in size to worry about, the pupil difference, perhaps genetic.
In addition, the reasons for which pupils may temporarily differ in size, are not completely clear.Therefore, if you or your child has no other symptoms and if the pupils return to normal size, then nothing to worry about.Unequal
pupil size more than 1 mm, especially when this phenomenon develops with time, and pupils not reduce its size after the lapse of a certain period may be an indication of disease of the brain, blood vessels or
anisocoria reasons (different pupils)
use of eye drops is a common cause harmless changes in pupil size.Other medications that fall into the eyes, including medicine from asthma - inhalers, can also change the size of the pupil.
Other causes of unequal pupil size may include:
- Intracranial bleeding caused by traumatic brain injury
- tumor or abscess
brain - High blood pressure in one eye caused by glaucoma
- infection of the meninges caused by meningitisor encephalitis
- The defeat of the oculomotor nerve
- Swelling of the lymph nodes in the upper part of the chest causes pressure on the nerve and can lead to a reduction in the pupil or the lowering of the century on the affected side (Horner's syndrome)
- Cancer apex (Roque symptom)
-Thrombosis of the carotid artery
- the cerebral circulation
- Blunt eye injury with damage to the sphincter of the pupil
- Congenital anomalies
eye - Drug addiction (pilocarpine, cocaine, tropicamide, amphetamine, "ecstasy", scopolamine)
you should consult a doctor ifyou have a long, unexplained or sudden changes in pupil size.This may be a sign of a very serious condition.
necessary to consult a doctor immediately if the various dimensions of the pupil occur with:
- Blurred vision
- The sensitivity of the eye to light
- Loss of
- Nausea or vomiting
- Strongpain in the eye
Diagnostics anisocoria (different pupils)
anisocoria Diagnosis begins with a thorough medical history, physical and neurological examinations.
Diagnostic tests that may be performed include:
- Blood tests
- Studies of cerebrospinal fluid (lumbar puncture)
- Computed tomography
head - MRI
- Tonometry (if suspected glaucoma)
- X-rays of the skull and neck
Treatment anisocoria (different pupils)
Treatment depends on the cause of the uneven pupil size.
If you notice a different pupil size after an eye injury or head, you should get medical help immediately.
Depending on the diagnosis, treatment may include drugs for the control of migraine, corticosteroids to reduce swelling of the brain tissue, anticonvulsants for the control of seizures, pain relievers, antibiotics for bacterial meningitis, or antineoplastic drugs.