miosis
Eye opening narrows
Miosis is the constriction of the pupil of the eye.
It occurs naturally in bright light and during sleep, or as a response to certain drugs, particularly opioids.
The opposite condition, dilation, is called mydriasis.
The doctor noted miosis in both eyes.
Provision of light
- photoreactionLight-induced chemical change
- reflexInvoluntary stimulus response
- constrictionTightening or narrowing action
- adaptationFitting to new conditions
glare · protective · automatic · photophobia · dilation · dim · low-light · darkness
Tightening or narrowing action
- pinpointLocate with exactness
- pupillaryOf the eye's opening
- irisEye's pigmented disc
- contractionReduction in size
small · sphincter · bilateral · unilateral · direct · consensual · accommodation · convergence
Opioid analgesic medication
- heroinIllegal addictive opiate
- codeineOpium-derived painkiller
- fentanylSynthetic pain-blocking compound
- oxycodonePowerful prescription pain reliever
hydrocodone · methadone · opium · overdose · sedation · narcotic · analgesic · intoxication
Nerve system promoting rest
- oculomotorEye movement nerve
- brainstemLower neural trunk
- ptosisAbnormal lid drooping
- sympatheticFeeling others' emotions
lesion · hemorrhage · stroke · pathological · bilateral · unilateral · diagnostic
Phosphorus compound, often toxic
- cholinesteraseHydrolyzes nerve signal molecules
- prostaglandinLipid compound affecting inflammation
- timololBeta-blocker for eyes
- eye-dropsTopical ophthalmic solution
illumination
Provision of light
- photoreactionLight-induced chemical change
- reflexInvoluntary stimulus response
- constrictionTightening or narrowing action
adaptation · glare · protective · automatic · photophobia · dilation · dim · low-light · darkness · accommodation
constriction
Tightening or narrowing action
contraction · small · sphincter · bilateral · unilateral · direct · consensual · accommodation · convergence · parasympathetic
morphine
Opioid analgesic medication
- heroinIllegal addictive opiate
- codeineOpium-derived painkiller
- fentanylSynthetic pain-blocking compound
oxycodone · hydrocodone · methadone · opium · overdose · sedation · narcotic · analgesic · intoxication · naloxone
parasympathetic
Nerve system promoting rest
- oculomotorEye movement nerve
- brainstemLower neural trunk
- ptosisAbnormal lid drooping
sympathetic · lesion · hemorrhage · stroke · pathological · bilateral · unilateral · diagnostic
organophosphate
Phosphorus compound, often toxic
- cholinesteraseHydrolyzes nerve signal molecules
- prostaglandinLipid compound affecting inflammation
- timololBeta-blocker for eyes
eye-drops · topical · therapeutic · drug-induced · contraindication
- Pupil Disordersdilated pupil
- intoxication effectseuphoria, dizziness, slurred speech, drowsiness, confusion
- cholinergic systemacetylcholine, cholinergic, choline, cholinesterase, parasympathetic
- Eye Movementsaccade, nystagmus, eye tracking, convergence, pursuit
- overdoseoverdose, drug overdose, fatal overdose, heroin overdose, fentanyl overdose