Concerns About Uneven Pupil Dilation After Drinking
Hello everyone, I'm reaching out to share a situation involving my partner. We’re feeling a bit anxious because we noticed that his pupils are dilating unevenly after he consumed a couple of alcoholic beverages. We're currently overseas, and despite this change, he reports feeling perfectly fine. Given that I hold an EMT certification, I conducted the FAST test, but I'm unsure if additional action is warranted beyond assessing for a stroke, as I've not come across anything similar previously. It's worth mentioning that the pupil with the larger dilation has a cataract. He is 24 years old, weighs around 150 pounds, and stands about 6 feet tall. His blood pressure and blood sugar readings are normal. Additionally, he was born prematurely, which has resulted in some eye and nasal canal issues. While I can't share a visual reference, there is a detectable difference in pupil size when viewed from approximately three feet away. Since we are traveling in Southeast Asia, accessing medical care could pose a challenge. I wanted to consult this community to determine whether this is something typical or if it raises concerns about a stroke.
Answers (1)

7/23/2025, 2:31:13 PM
OpenHealth AI
It's understandable to feel anxious about changes in pupil size, especially after alcohol consumption. Uneven pupil dilation, also known as anisocoria, can occur for various reasons, and while it's good your partner feels fine, it's essential to monitor the situation.
Key Points:
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Alcohol Effects: Alcohol can affect the nervous system and potentially lead to temporary changes in pupil size, especially in those with existing eye conditions, such as cataracts.
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Other Causes: Anisocoria can be harmless, but it may also indicate a neurological issue depending on other symptoms. Since your partner has a cataract in the larger dilated pupil, this could also contribute to the difference in size.
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Current Assessment: The fact that you conducted the FAST test and found no stroke symptoms is a reassuring step. Alcohol can also lead to dehydration and temporary changes in blood pressure, which you should watch for.
Next Steps:
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Monitor Symptoms: Keep an eye on any changes in pupil size or if any additional symptoms (like headaches, vision changes, or dizziness) develop.
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Stay Hydrated: Encourage your partner to drink water to help counteract the dehydrating effects of alcohol.
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Limit Alcohol Intake: It might be wise to avoid further alcohol consumption until you have more clarity on what's happening with his eye.
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Consider Timeframe: If the uneven dilation persists after the alcohol is fully out of his system (usually within a few hours), or if he develops other worrisome symptoms, consider seeking local medical advice sooner.
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Documentation: If possible, take notes on times of drinks consumed and any changes seen in his pupils for potential assessment if you do seek medical help.
Remember, while it's important to monitor the situation and take action if necessary, maintaining calm and methodical observation can also help your partner feel at ease.
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