Constricted pupil
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DDx
- Opioids (pinpoint)
- Other causes of sympatholytic poisoning, e.g., benzodiazepines, clonidine
- Horner's syndrome
- Myotic drugs, e.g., pilocarpine
- Neurosyphilis (Argyll Robertson pupils)
- Pontine infarct
- Uveitis
- Inflammatory adhesions between iris and lens (posterior synechiae)
- Cholinergic poisoning, e.g., organophosphates
- Physiologic anisocoria (unequal pupils, react normally)
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DDx
- Opioids (pinpoint)
- Other causes of sympatholytic poisoning, e.g., benzodiazepines, clonidine
- Horner's syndrome
- Myotic drugs, e.g., pilocarpine
- Neurosyphilis (Argyll Robertson pupils)
- Pontine infarct
- Uveitis
- Inflammatory adhesions between iris and lens (posterior synechiae)
- Cholinergic poisoning, e.g., organophosphates
- Physiologic anisocoria (unequal pupils, react normally)
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