Optic Nerve in Glaucoma (Manado 2011)

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Optic Nerve in Glaucoma (Manado 2011)

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    MaharaniOphthalmology Department

    Medical Faculty, Diponegoro University

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    GLAUCOMA

    Intaocularpressure

    Optic

    disc

    Visual

    Field

    Introduction

    IOA Meeting !th Manado"#$$

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    Optic Disc

    Most of clinically detectable

    changes Susceptible Early sign

    %O&MAL''GLAUCOMA ''

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    Direct Ophthalmoscope

    Oldest Most (idely used a)out $*+

    magnication

    porta)le, simply to usescreening large num)ers

    a)ility

    relative smallpupil

    lac- o.stereopsis

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    Indirect Ophthalmoscope

    not recommended

    + magnication inade/uate detecting small detail

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    0lit1lamp 2echni/uescom)ined (ith variety o. lens

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    3igh po(er concave contact lens3ru)y lens

    1** D mounted to slit1lamp very small eld o. vie( good /uality stereopsis di4cult to o)tain

    0lit1lamp 2echni/uescom)ined (ith variety o. lens

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    3igh po(er conve+ lens!#D, 56D and 7#D lens

    e+cellent stereopsis !#D $+ magnication 56D $8$+ magnication 7#D $8+ (ider eld o. vie(

    smaller pupil

    Slit-lamp Techniquescombined with variety of lens

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    Fundus Dra(ing

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    Fundus 9hotography

    permanent record allo(s .or detailed e+pense o. the .undus camera s-illed and e+periencedtechnician

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    3&2

    OT

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    %ormal Optic Disc

    0i:e and 0hape o. 2he Disc vertical diameter ;

    hori:ontal A.rican ; Asian ;

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    %ormal Optic Disc

    0i:e and 0hape o. 2he Cup near the center o. the disc shape = round to hori:ontally

    oval hori:ontal diameter = # > "8$mm

    Cup1Disc &atio correlate to disc si:e "? normal disc CD& #,5

    %ormal Optic Disc

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    %euroretinal &im disc margin 11 edge o. cup I0%2 rule

    %ormal Optic Disc

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    Glaucomatous OpticDisc

    0cleral &ing

    %eural &im &etinal nerve )erlayer

    Disc haemorage

    9eripapillary atrophy

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    0cleral &ing

    optic disc si:e nodi@erence

    LA&G< DI0C 0MALL DI0C

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    %eural &im

    9&I%0I9AL 9A23OLOGIC Loss o. neural rim

    donut rather than theholeB

    Di@use and locali:ed

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    %eural &im

    locali:ed loss o. %& I0%2 rule )rea-

    65? glaucoma

    %O2C3I%G

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    %eural &im

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    Cup Asimetry

    - CDR- CDR simetris padasimetris pada99.5%99.5% populasipopulasi

    -- AsimetryAsimetry > 0.1> 0.1 < 7% of population< 7% of population

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    &etinal %erve Fi)er Layer

    %O&MAL

    right1Dar-1right 9attern

    Important compare)et(een " eyes

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    &etinal %erve Fi)er Layer

    Slitlikeor Groovelike1arcuate nerve )er

    )undle1not a sign o.a)normality1li-ely to )e a)normal

    1optic disc visualeld%O&MAL

    1 Close .ollo(1up

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    &etinal %erve Fi)er Layer

    Wedge-shaped defects1easiest to detect1sup in. arcuate

    1%2G

    locali:ed &%FLde.ect

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    &etinal %erve Fi)er Layer

    Diuse or generalized RNFLloss1most common

    1most di4cult to detect1more common in high IO9

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    Disc 3emorrhages

    splinter Eameshaped chronic ischaemic O%3 " > "? glaucomacases %2G ; OAG ; O32in.erotemporal

    transient, may recurIOA Meeting !th Manado "#$$

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    associated notching! "#$% defect indication of early progressiveglaucomatous damage eliminated &'D! systemic diss!anticoagulant

    Disc 3emorrhages

    %O2C3I%G

    &%FL D

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    9eripapillaryAtrophy

    (ona )etainner crescent

    adHacent to the disc visi)le sclera (ona *lpha outer crescent

    more peripheralirregular

    hypopigmentation andhyperpigmentation

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    Vascular Changes

    %asali:ationnot spesic .or

    glaucoma

    ayonetting&arely seen innormal

    AO%

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    Vascular Changes

    aring vasculer

    Circumlinear vessel%ot specic .orglaucoma*#? in normalpopulation

    A&I%G

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    GLAUCOMA'

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    L< &