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WebMD Symptom Checker

Small (constricted) pupils and Unequal pupils (size)

WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms small (constricted) pupils and unequal pupils (size) including Eye injury, Horner's syndrome, and Narcotic abuse.

There are 9 conditions associated with small (constricted) pupils and unequal pupils (size). The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.

  • Eye injury

    There are many types of eye injury, and symptoms include eye pain, burning, irritation, bleeding, and more.

  • Horner's syndrome

    Horner syndrome is a rare condition that can cause a drooping eyelid, decreased sweating, and a small pupil.

  • Narcotic abuse

    Narcotic abuse can cause fatigue, shallow breathing, anxiety, euphoria, vomiting, confusion, and constipation.

  • Normal variation

    Normal variation, or anisocoria, is unequal pupil size, and can cause a droopy eyelid or double vision.

  • Medication reaction or side-effect

    Medication side effects include nausea, vomiting, stomach upset, weakness, dizziness, seizures, and more.

  • Stroke

    A stroke occurs when blood and oxygen to the brain are cut off, and causes numbness, confusion, and more.

  • Brain injury

    Brain injuries can cause problems with memory, attention, sight, language, movement, and mood.

  • Adie's pupil

    Adie's pupil is a rare disorder usually affecting only one eye, causing blurry or distorted vision in the eye.

  • Brain tumor

    Primary brain tumors are often benign but can cause seizures, ongoing headaches, or loss of coordination.