![]() ![]() If an underlying cause is identified, treatment is aimed at this issue. However, the cause is not always identified. Most cases of this syndrome have an underlying cause, such as a tumor, stroke, or spinal cord injury. It is characterized by a triad of symptoms, including pupil constriction that causes anisocoria, drooping eyelid, and not sweating in the area surrounding the affected eye. Horner’s syndrome is another possible cause of anisocoria. Certain medications that go directly into the eye, such as glaucoma eyedrops like pilocarpine.Eye trauma from accidental injury or surgery.Certain brain disorders and injuries, such as a stroke, brain tumor, brain hemorrhage, or infection in the brain. ![]() When the issue is significant, multiple factors can cause it. Some research suggests that mild anisocoria affects about 20 percent of the general population. In many cases, when this issue is mild, there is no underlying cause. Over time, it is possible for both of the pupils to be affected. When Adie syndrome is present, it usually starts by affecting one pupil. Facial pain, headache, and emotional fluctuations are also possible with this condition. When a doctor tests the person’s deep tendon reflexes using a small hammer, they either do not have any response or the response is poor. When this issue occurs as a result of Adie syndrome, people often have poor or absent deep tendon reflexes too. Some examples of accompanying symptoms include the following: The underlying cause of this condition ultimately determines the other symptoms that a person experiences. But people can experience it on a regular basis too. In some cases, this condition is only temporary. The doctor usually picks up on the problem when they are giving an eye examination. In many cases, people do not notice that their pupils are unequal because the size difference is not significant. This means that it starts losing its color and can become lighter. It is also possible for the iris to experience depigmentation. ![]() This is referred to as anisocoria.īy looking at the affected pupil, you can sometimes see that it is larger than the other pupil. But for some people, the pupils are not always the same size. For most people, the pupils react to light, either enlarging or shrinking equally. The black spot in the center of your eye is known as the pupil. A doctor will perform an examination to determine if treatment is necessary. But if uneven pupils are the result of a medical condition, treatment might be necessary. In benign cases where the issue just occurs for no apparent reason, no treatment is necessary. While it is often a benign issue, it is also possible for it to be a symptom of a medical condition. In fact, it happens in about one in five people. It’s common to have pupils that are different sizes. Implantable Miniature Telescope SurgeryĪnisocoria, also called Adie’s tonic pupil or Adie syndrome, is described as uneven pupil size.Other medicines that get in the eyes, including medicine from asthma inhalers, can change pupil size. The use of eye drops is a common cause of a harmless change in pupil size. Unequal pupil sizes of more than 1 mm that develop later in life and do not return to equal size may be a sign of an eye, brain, blood vessel, or nerve disease. If there are no other symptoms and if the pupils return to normal, then it is nothing to worry about. If other family members also have similar pupils, then the pupil size difference could be genetic and is nothing to worry about.Īlso, for unknown reasons, pupils may temporarily differ in size. Most often, the diameter difference is less than 0.5 mm, but it can be up to 1 mm.īabies born with different sized pupils may not have any underlying disorder. Slight differences in pupil sizes are found in up to 1 in 5 healthy people. It gets larger in dim light and smaller in bright light. The pupil is the black part in the center of the eye. Anisocoria Enlargement of one pupil Pupils of different size Eyes/pupils different sizeĪnisocoria is unequal pupil size. ![]()
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