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#Normal pupil size chart series#

If you think you have anisocoria, you should speak with your ophthalmologist or healthcare professional. If you develop unequal pupil sizes of more than 1 mm and do not return to equal size, you may have an eye, brain, blood vessel, or nerve disease or condition. You should describe and report any symptoms or signs present during anisocoria to a healthcare professional. Symptoms may be the sign of a more severe health issue. If you develop anisocoria, you may also experience symptoms. It may become apparent when they compare old and newer photos of themselves. Many people do not realize that their pupils vary in size. It has been associated with brain tumors, diabetes, high blood pressure, and aneurysm. Damage to the nerve can be due to various causes. The third cranial nerve is responsible for moving four of the six eye muscles and pupil constriction, eye focusing, and upper eyelid positioning. The disorder can also impact deep tendon reflexes. Also referred to as Adie's Syndrome or Holmes-Adie Syndrome, this rare neurological disorder often involves non-progressive or limited damage to the nervous system.

#Normal pupil size chart series#

It triggers a series of signs and symptoms, including a drooping eyelid. The disruption of a nerve pathway that runs from the brain to the face and eye (on one side of the body). This type of uveitis (inflammatory eye disease) results from an eye infection, eye injury, or separate inflammatory eye disease. An eye doctor will be able to rule out any life-threatening conditions and perform a diagnosis.Įxamples of conditions that can result in pathologic anisocoria include: If you experience symptoms alongside anisocoria, you should seek medical care. Pathologic anisocoria occurs due to an underlying disease or condition.

Sympathomimetics (type of stimulant compounds), such as adrenaline, clonidine, and phenylephrine.

Herbal plants, like Jimson weed, blue nightshade, and Angel’s trumpet.

Anticholinergics, like atropine, homatropine, tropicamide, scopolamine, and cyclopentolate.

The following list details agents that can affect the pupillary dilator or sphincter muscles and cause this anisocoria: Pharmacologic anisocoria can appear as either mydriasis (dilation of the pupil) or miosis (constriction of the pupil). Mechanical anisocoria will happen because of damage to either the iris or its supporting structures.Įye trauma, surgery, or inflammatory conditions like uveitis(inflammation of the middle tissue layer of the eye) are just some examples that could lead to mechanical anisocoria.Īngle-closure glaucoma or intraocular tumors may also result in mechanical anisocoria. This is a muscle located in the colored part of the eye called the iris. This nucleus is responsible for the pupillary sphincter. Some believe that the condition occurs due to a type of inhibition of the Edinger-Westphal nucleus. Health professionals do not know exactly why people develop simple anisocoria.

The difference in pupil size will be less than or equal to 1 mm, and the condition may be intermittent, persistent, or self-resolving. This particular type can affect up to 20% of the population. Simple anisocoria (otherwise known as physiologic or essential) is the most frequent cause of uneven pupil sizes.

The following list shows different types of anisocoria and their causes. In some cases, anisocoria can develop due to a possibly life-threatening condition. While the condition is common, the causes may or may not be benign. Characterization of anisocoria includes unequal pupil sizes.