Ever noticed your pupils looking unusually small, like tiny pinpricks? Those are called pinpoint pupils, or miosis, and while sometimes harmless, they can also signal an underlying issue.
So, what causes small pupils?
One common reason is bright light. Your pupils naturally constrict to limit the amount of light entering your eye. Certain medications, particularly opioids like morphine and fentanyl, are also known to cause miosis. Glaucoma medications, specifically pilocarpine, work by constricting the pupil to improve fluid drainage.
Less common, but more concerning, causes can include brain injuries, Horner's syndrome (affecting nerves in the face and eye), and certain types of nerve damage. If you notice persistently small pupils, especially if accompanied by other symptoms like dizziness, headache, blurred vision, or changes in alertness, it's crucial to consult a doctor. They can determine the underlying cause and recommend appropriate treatment.
