![]() ![]() ![]() ![]() Mostly women between the ages of 20 and 40 are affected. Adie syndrome is caused when a viral infection causes nerve damage in the eye.An example in this category would be Horner syndrome which occurs when there is an interruption in nerve impulses in the eye.Examples of disorders that can affect the nerves of the eyes are available below: People with these disorders usually present with other symptoms like droopy eye. The pathways that carry electrical impulses from the brain to the eye structures are sometimes damaged. Infections include meningitis and encephalitis where the brain membranes are inflamed. Problems with Eye Nervesĭisorders include stroke, brain hemorrhage, brain tumors and infections can affect the nerves of the eye. The latter condition is often accompanied by severe eye pain. Conditions such as glaucoma or iris inflammation can also result in uneven pupil size. medicines used in inhalers for asthma, some insecticides, motion sickness medicines. Sometimes chemicals get into the eye by accident and cause one pupil to be bigger than the other, e.g. There are some eye drops prescribed to treat certain eye conditions that cause the pupil to dilate or constrict. The uneven pupil size can also be due to the side effects of a medication. Eye DisordersĮye disorders such as injuries to the eye or even birth defects can make you have one pupil bigger than the other. Physiological anisocoria is usually only picked up when examined by a doctor and when it is associated with no other underlying medical condition. When other members of the family have the same condition, the anisocoria is genetic. The variation in pupil size is roughly less than a 1 mm. There is no accompanying symptom and both pupils respond normally to varying light conditions. The individual is born with the condition that is life-long. It is usually considered as a normal condition. The abnormality of the larger pupil can be easily seen in bright light, when it cannot constrict in response to the bright light. More commonly, it is the larger pupil that cannot constrict normally. In the latter case, the smaller pupil has an impaired ability to dilate normally. The abnormal pupil can be either the larger or the smaller one. The medical term for this problem is anisocoria. Why Do I Have One Pupil Bigger than the Other? Usually both pupils are of equal size but some people have unequal pupils. The pupil is the black opening at center of the eye that constricts or dilates in response to the amount of light the eye is exposed to. The structure of the eye is comprised of many different elements. Eyes are responsible for so many non-verbal cues that we give out daily when communicating with others. The benign condition known as “Adie’s tonic pupil” typically causes one pupil to be noticeably bigger than the other, with the affected pupil not reacting to light.The eyes of a person are the windows to their soul. We accept payments by cash, checks, and Visa, MasterCard, American Express and Discover credit cards. To schedule an appointment, please call us today. But you should have your unequal pupils evaluated by an eye care professional before you assume all is well. If the difference in pupil size is minor and your pupils react normally to tests your eye doctor performs, there may be nothing to worry about. These cases warrant examination by the ophthalmologist. On the other hand, more pronounced “significant aniscoria,” in which one pupil is larger than the other by more than 1.0 mm, may be the result of trauma, eye disease (such as “iritis”), or neurological disorders. Some research suggests that about 20 percent of the general population have benign, mild anisocoria. ![]() Southern Eye Institute - UNEQUAL PUPILS When one pupil of the eye is noticeably larger (dilated) or smaller (constricted) than the other, the condition is known as “anisocoria.” In most cases of mild anisocoria (known as “simple anisocoria” or “benign anisocoria”) that are not caused by underlying disease or trauma, one pupil is bigger than the other by less than 1.0 mm. ![]()
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