What can cause anisocoria?

What can cause anisocoria?


  • Aneurysm in the brain.
  • Bleeding inside the skull caused by head injury.
  • Brain tumor or abscess (such as, pontine lesions)
  • Excess pressure in one eye caused by glaucoma.
  • Increased intracranial pressure, because of brain swelling, intracranial hemorrhage, acute stroke, or intracranial tumor.

Can anisocoria be harmless?

People with physiological anisocoria do not usually need treatment, as it is typically harmless. Mechanical anisocoria may require surgery to correct the damage a trauma has caused. If the damage is due to an underlying condition, such as uveitis or glaucoma, a doctor will develop an individualized treatment plan.

Can Anisocoria go away on its own?

Simple anisocoria This is a benign condition that causes the pupils to differ in size, usually by up to one millimeter in diameter, without affecting the pupils’ response to light. This condition can be intermittent or constant, and may even go away on its own without medical intervention.

What drugs cause Anisocoria?

Some Common Causes of Anisocoria

Cause Suggestive Findings
Drugs (eg, scopolamine patch; cocaine, pilocarpine, animal flea collars or sprays, organophosphates, or aerosolized ipratropium if they contact the eye; cycloplegic, mydriatic, clonidine, or apraclonidine eye drops) History of use or exposure

Are there any perceptible symptoms of anisocoria?

The only perceptible symptom of Anisocoria is an unequal size of the pupils. Associated with the different size of the pupils may be symptoms associated with underlying diseases such as: Loss of visual acuity and inability to see small details (blurred vision). Diplopia or double vision. Present some sensitivity in the eyes to light.

What causes a smaller pupil with anisocoria?

Certain eye medications. For instance, pilocarpine eye drops used to treat glaucoma might cause the pupil of the dealt with eye to be smaller sized than the other pupil. Inflammation of the iris. Iritis (anterior uveitis) can cause anisocoria that generally is accompanied by eye pain.

How are eye drops used to treat anisocoria?

Once the exact cause of anisocoria is confirmed, the doctor initiates appropriate treatment measures. In case an infection is triggering uneven pupil size in the patient, then antibiotics or antivirals in the form of eye drops are prescribed, to combat the microbes and rectify the condition in the eyes.

What causes pressure in the eye called anisocoria?

Anisocoria can be caused by certain physiological conditions, as a result of a deterioration of the efferent neurofibres that control the pupil and by physical injuries or medications. As it is the case of: Aneurysm in the brain. A hemorrhage caused by a head injury. A tumor in the brain. Pressure inside the high eye.

What are the differential diagnoses for anisocoria?

Anisocoria Differential Diagnosis. This condition should be diagnosed in a proper manner, and for this, a number of tests needs to be performed. The differential diagnosis of this disease involves: Adie’s Syndrome. Botulism. Alcohol intoxication. Cerebral Aneurysm. Brain tumor.

Is there any treatment for anisocoria?

Part 3 of 3: Treating Anisocoria Expect no treatment for some conditions. Some underlying conditions that cause anisocoria are not life threatening. Give the cat medication. For some underlying conditions, antibiotics and anti-inflammatory medications will be prescribed by the vet. Stop the cat’s prior medication. Agree to surgery for your cat if necessary. Give the cat eye drops.

Does astigmatism cause anisocoria?

In rare circumstances , astigmatism could possibly cause the illusion of anisocoria. But the likelihood that the irregular cornea gives the impression on an enlarged pupil is slim to none.