Ophthalmology Book

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Miosis

Aka: Miosis, Pupil constriction, Consensual Light Reaction, Near Reaction
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  1. Pupil constriction as a normal response
    1. Parasympathetic stimulation
    2. Near Reaction (e.g. Reading)
      1. Pupil constriction mediated by Oculomotor Nerve
      2. Other changes with Near Reaction
        1. Eye convergence under Oculomotor Nerve control
        2. Accomodation (Lenses become more convex)
    3. Bright light results in bilateral Pupil constriction
      1. Direct reaction to light in exposed eye
        1. Light strikes Retina of affected eye
        2. Signal passed via Optic Nerve to Midbrain
        3. Oculomotor Nerve signals same iris to constrict
      2. Consensual Light Reaction in opposite eye
        1. Midbrain receives signal from exposed eye
        2. Oculomotor Nerve sinals opposite iris to constrict
  2. Abnormal Causes
    1. Mnemonic: COPS
      1. Cholinergic Toxicity
      2. Clonidine
      3. Opiate Overdose
        1. Responds to Naloxone (except synthetic opiates)
      4. Organophosphate Toxicity
      5. Phenothiazines
      6. Pilocarpine
      7. Pontine bleed or lesion
      8. Sedative hypnotics (Benzodiazepine)
    2. Horner's Syndrome

Miosis disorder (C0026205)

Definition (MSH) Pupillary constriction. This may result from congenital absence of the dilatator pupillary muscle, defective sympathetic innervation, or irritation of the CONJUNCTIVA or CORNEA.
Concepts Finding (T033)
MSH D015877
ICD9 379.42
SnomedCT 194166000, 63251006, 61514009
English Mioses, Miosis, MIOSIS, PUPILLARY CONSTRICTION, PUPILS CONSTRICTED, Small pupil, Miosis disorder, Constricted Pupil, Constricted Pupils, Pupil, Constricted, Pupils, Constricted, Mioses, Persistent, Miosis, Persistent, Persistent Mioses, Persistent Miosis, Mioses, Pupillary, Miosis, Pupillary, Pupillary Mioses, Pupillary Miosis, Pupil, Small, Pupils, Small, Small Pupil, Small Pupils, Miosis not d/t miotics, Miosis [Disease/Finding], constrict pupils, constricted pupil, constricted pupils, mioses, miosis disorder, small pupils, miosies, pupillary miosis, miose, small pupil, pupil constrict, Persistent miosis, Persistent miosis (disorder), miosis, myosis, Miosis, NOS, Miosis (disorder), Persistent miosis [Ambiguous], Miosis (persistent), not due to miotics, Miosis, not due to miotics, Persistent miosis, not due to miotics
French MYOSIS, Miosis (persistant), non dû à des myotiques, RETRECISSEMENT DE LA PUPILLE, Myosis, Constriction pupillaire, Myosis pupillaire
Portuguese MIOSE, Miose persistente não causada por mióticos, CONTRACCAO DAS PUPILAS, Miose, Miose Pupilar
Spanish MIOSIS, Miosis (persistente) no producida por mióticos, Persistent miosis [Ambiguous], Persistent miosis, PUPILAS CONTRAIDAS, miosis persistente (trastorno), miosis persistente, constricción de las pupilas, miosis (trastorno), miosis, Miosis, Miosis Pupilar
Dutch miosis (persisterend), niet door miotica, miosis, Miose, Pupilmiose
German Miosis (persistierend), nicht durch Miotika verursacht, MIOSIS, PUPILLENVERENGUNG, Miose, Stenokorie, Pupillenverengung, Miosis
Italian Miosi (persistente), non dovuta a miotici, Pupilla piccola, Miosi persistente, Restringimento del diametro pupillare, Miosi pupillare, Miosi
Swedish Pupillsammandragning
Japanese ｼｭｸﾄﾞｳ, 瞳孔縮小, 縮瞳
Czech mióza, Mióza, Mióza ( perzistentní), nevyvolaná miotiky
Finnish Mioosi
Russian MIOZ, МИОЗ
Polish Zwężenie źrenicy
Hungarian Pupillaszűkület (persistáló), nem pupillaszűkítő okozta, Pupillaszűkület
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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