Download - Anatomi Mata
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ANATOMIMATA
dr. WAHJU RATNA M SpM
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ORBITA
Ruang piramida segi 4Basis: auditus orbitaeApek: Foramen optikumAtap: os. Frontalis, os. SphenoidalisDasar: os. Zygomatikus, os. Palatina, os. MaxillaDdg Lat:os. Zygomatikus, os. Spenoid, os. Frontalddg med: os. Maxila, os. Lakrima, os. ethmoidalis, os. Sphenoidalis
Bangunan 2 di orbita:For etmoidalis anterior & posteriorCanalis optikusFissura orbitalis superior & inferior
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ORBITA...
Fissura Orbita sup, dilalui:N. FrontalisN. LakrimalisN. NasosiliarisN. OptikusN. III(okulomotorius), IV(Troklearis), VI(abduscen)Pleksus simpatikus
Fissura Orbita Inf, dilalui:N. MaxilarisN. ZygomatikusVasa infraorbitaSrbt ggl spenoidale
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BOLA MATA:
Bentuk bulatDewasa ; ukuran diameter anteroposterior 24.5 mm
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KONJUNGTIVA
Membran mukosa yg transparan & tipisTerdiri dari:
Konjungtiva Palpebra:Membungkus palpebra
Konjungtiva BulbiMembungkus bola mata
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KONJUNGTIVA ....
HistologiEpitel Konjungtiva
Sel Epitel Superfisial, mgd sel goblet yg mensekresi mukosa
Sel Epitel Basal, lb pekat d.p sel superfisial, dpt mgd pigmen
Stroma KonjungtivaLapisan adenoid (superfisial)mgd jar limfoidLapisan fibrosa
Kelenjar air mata asesori ( kelenjar Krause & Wolfring)
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KONJUNGTIVA ....
Pendarahan, Limfe & Persarafan
Arteri: berasal a.siliaris anterior & a.Palpebralis
Limfe : Tssn pd lapisan superfisial & profunda & bersambung dg pembuluh limfe kelopak mata, mbtk pleksus limfatikus
Persarafan : Nervus oftalmikus cb. I
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FASCIA BULBI ( KAPSULA TENON)
: suatu membran mukosa yg membungkus bola mata dari limbus sampai NII
Dekat limbus konjungtiva, kapsula tenon & episklera menyatu
Lebih posterior, kapsula tenon berhadapan langsung dg sklera & sisi luar berhadapan dg lemak orbita
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SKLERA & EPISKLERA
Sklera : pembungkus fibrosa pelindung mata di bagian luar
Lamina Cribrosa: bbrp lembar jar sklera yg melintang di bag anterior N.II
Episklera: pembungkus permukaan luar sklera anterior
Inervasi: n. siliaris
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KORNEA
: Jenih, transparan, avaskulerDiameter 12 mm, tebal +/- 0,5 mmOrg meninggal 2-3 jam kornea keruhLapisan Kornea: Epitel squamos komplek, 6-8 lap Membrana Bowman (lap basalis ant), homogen,
jernih, mdh rusak Substansia Propia, menjaga kejernihan kornea, tdp
can Schlemm di periferMemb. Discemet ( lap basalissisten post), lb
resisten thd traumaEndotel, btk hexagonal
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KORNEA...
Nutrisi:pembuluh darah di limbus, HA, air mata(tear film)
a. Cilliaris ant: di limbusInervasi: N. Trigeminus (V), cab oftalmikus(1)
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UVEA (td Iris, Korpus Siliaris, Khoroid)
a. IRISPerpanjangan korpus siliaris ke anteriorMemisahkan COA dg COPtdp pupilVaskularisasi: Sirkulus iridis mayorInervasi: mll serat2 dlm n. SiliarisKonstriksi, PS N. III (m. spingter pupil)Dilatasi, Simpatis (m. dilatator pupil)
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UVEA...
b. KORPUS SILIARISBbtk segi tiga, membentang dari ujung anterior koroid – pangkal iris (+/- 6 mm)Pars Plikata:td 2 lap epiteltdp procesus siliaris, plika siliarismgg pigmenmhslkan HA (pd proc siliaris)melekat pd zonula zinii
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UVEA...
Pars PlanaOtot: m. orbikularis iridis
m. siliaris, tssn radier, miridional, sirkuler
Vaskularisasi: a. siliaris antsirkulus iridis mayorv. siliaris ant
inervasi : PS N.III
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UVEA...c. KOROIDSegmen post uvea, Di antara retina & skleraTssn 3 lap p.d(bs, sdg, kcl)Lap koroid dr luar ke dlm:
Lap supra koroid ( berhadapan langsung dg lam. fusca)p.d besar, asal dr a. siliaris brevisp,d sedang, tssn sgt rapatLam. koriokapilaris, tssn sgt rapatMemb. Bruch (lam vitrea), tipis spt kaca,
berhadapan dg epitel pigmen retina, fs memberi nutrisi bangunan sekitar(sklera & retina)
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LENSA
Struktur bikonveks, avaskuler, tdk berwarna, hampir transparan
Tebal 4 mm, diameter 9 mmDigantung oleh Zonula ZiniiPd anak lensa cair krn nukleus (-)65% td air, 35% td proteinNutrisi: HA
KoroidKorpus siliaris
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HUMOR AQUAEUS
ANGULUS IRIDOKORNEALIS
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RETINAJar. saraf, semitransparan, Melapisi 2/3 post bola mataMembentang hampir sama dg korpus siliaris, berakir
di tepi oraserataLapisan2 retina:
Memb. Limitans internaLap serat sarafLap sel ganglionLap pleksiform dlnLap inti dlmLap pleksiform luarLap inti luarMemb. limitans eksternaEpitel pigmen retina
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RETINA....
Tdp: Sel Basilus
Fungsi:melihat cahaya intensitas rendahvisus periferorientasi ruangan
Sel KonusFungsi:melihat cahaya dg intensitas tinggimelihat warnavisus sentral
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RETINA.....
MAKULA LUTEAFovea sentralis: conusserabut saraf (-)sel ganglion di pinggirVasc : a. sentralis retina (prof)
koriokapilare (superfisial)inervasi: (-)
RETINA PERIFER
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CORPUS VITREUS
Gelatin, jernih, avaskulermbtk 2/3 volume & berat mataSsn: 99% air
1% kolagen & asam hialuronatVaskularisasi:
a. Carotis internaa. Carotis eksterna
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