Download - Tulburari ale vederii binoculare
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Tulburari ale vederii Tulburari ale vederii binocularebinoculare
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Anatomia muschilor extrinseci ai GO Anatomia muschilor extrinseci ai GO
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Miscarile G.O.Miscarile G.O.
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Vederea Binoculara (V.B.)Vederea Binoculara (V.B.)
Def = capacitatea de a elabora o imagine Def = capacitatea de a elabora o imagine vizuala unica a imaginilor separate vizuala unica a imaginilor separate percepute de dei 2 ochi.percepute de dei 2 ochi.
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Gradele V.B.Gradele V.B.
Perceptia simultanaPerceptia simultana = posibilitatea de a = posibilitatea de a receptiona concomitent 2 obiecte diferite.receptiona concomitent 2 obiecte diferite.
FuziuneaFuziunea = posibilitatea contopirii a 2 = posibilitatea contopirii a 2 imagini care difera printr-un mic detaliu.imagini care difera printr-un mic detaliu.
Vederea stereoscopicaVederea stereoscopica = perceperea = perceperea tridimensionalatridimensionala
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Conditiile pt V.B.normalaConditiile pt V.B.normala
Integritatea anatomica si dioptrica a G.O.Integritatea anatomica si dioptrica a G.O. Integritatea ap. motorIntegritatea ap. motor Cimpul vizual binocularCimpul vizual binocular Corespondenta retiniana normala (CRN)Corespondenta retiniana normala (CRN)
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Fiziopatologia V.B.Fiziopatologia V.B.
OrtoforiaOrtoforia = alinierea perfecta a G.O. = alinierea perfecta a G.O. strabismstrabism= deviatia ochilor /1 ochi = deviatia ochilor /1 ochi
vederea dubla (diplopia)vederea dubla (diplopia)
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Strabism Strabism
diplopiediplopie
Confuzie Confuzie SupresieSupresie
AmbliopiaAmbliopia
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Tipuri de strabismTipuri de strabism
ParaliticParalitic
concomitent (concomitent (heterotropiaheterotropia)) Neparalitic Neparalitic
latent (latent (heteroforiaheteroforia))
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Strabismul ParaliticStrabismul Paralitic DefDef= pareza sau paralizia unuia sau mai multor = pareza sau paralizia unuia sau mai multor
muschi extrinseci ai G.O. muschi extrinseci ai G.O. EtiolEtiol : : 1. Congenital1. Congenital 2. Dobindit2. Dobindit - cond. inflamatorii - cond. inflamatorii - stari toxice- stari toxice - b.demielinizante- b.demielinizante - b. metabolice- b. metabolice - lez.vasculare- lez.vasculare - b. neoplazice - b. neoplazice - lez.degenerative - lez.degenerative - lez.traumatic- lez.traumatic
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SimptomeSimptome
DiplopiaDiplopia – – homonima homonima – paralizia – paralizia
abductor abductor
heteronimaheteronima – paralizia – paralizia
adductor adductor Falsa proiectieFalsa proiectie Stare de disconfortStare de disconfort
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SemneSemne
Deviatia G.O.Deviatia G.O. Limitarea sau abolirea Limitarea sau abolirea
misc. G. O.misc. G. O. Variabiltatea unghiului Variabiltatea unghiului
de dev, strabicade dev, strabica Pozitia vicioasa a Pozitia vicioasa a
capului capului
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Dg. Dg. ≠≠ strabismul neparalitic strabismul neparalitic TratamentTratament : 1. etiol. : 1. etiol.
2. prism.2. prism.
3. surgery3. surgery
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Strabismul neparaliticStrabismul neparaliticA.A. Latent (Heteroforia)Latent (Heteroforia)
DefDef = = CauzeCauze – vicii de refractie necorectate (H) – vicii de refractie necorectate (H) ClCl – dureri de cap – dureri de cap - durei oculare- durei oculare - cover test +- cover test + - unghi – mic + intermitent- unghi – mic + intermitent TratmTratm. – corectie optica. – corectie optica - trat. ortoptic la sinoptofor- trat. ortoptic la sinoptofor
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B. HeterotropiaB. Heterotropia
Def = deviatie manifesta Def = deviatie manifesta
CauzeCauze – defecte optice – defecte optice - defecte senzoriale - defecte senzoriale - defecte anatomice & motorii - defecte anatomice & motorii
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ClasificareClasificare
Directia de deviatie Directia de deviatie esotropieesotropie
exotropieexotropie Debut Debut congenitalcongenital (< 8 luni) (< 8 luni)
debut tardiv debut tardiv (> 2 ani) (> 2 ani) Localizarea dev. Localizarea dev. monolateralmonolateral
bilateralbilateral
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Cl Cl – AV – egala la cei 2 ochi (deviatie – AV – egala la cei 2 ochi (deviatie
alternanta)alternanta)
- scaderea AV (dev. monolat )- scaderea AV (dev. monolat )
- deviatie constanta - deviatie constanta
- cover test +- cover test +
- motilitatea normala- motilitatea normala
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Tipuri CliniceTipuri Clinice
EsotropiaEsotropia
Congenital Congenital
Debut tardiv Debut tardiv
ExotropiaExotropia
Exces de DivergentaExces de Divergenta
Insuficienta de ConvergentaInsuficienta de Convergenta
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TratamentTratament
Corectie OpticaCorectie Optica Trat. ambliopiei – ocluziaTrat. ambliopiei – ocluzia Ortoptic Ortoptic Corectia cu PrismeCorectia cu Prisme chirurgicalchirurgical Ortoptic postchirurgical Ortoptic postchirurgical