Disusun Oleh:
ANAK AGUNG D.A (01) ANGGA DINDA PRADANA (04) ERMA NUR FADILAH (22) ERNA AGUSTINA (24) NELY INDAH RAHMAWATI (47) RETNO AYU. K (55) SIGMA WARISTAMA (60)
PROGRAM STUDI ILMU KEPERAWATAN SEKOLAH TINGGI ILMU KESEHATAN SURYA MITRA HUSADA KEDIRI 2010
KATA PENGANTAR
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Puji syukur penulis panjatkan ke hadirat Tuhan Yang Maha Esa karena berkat rahmat dan hidayah-Nya, penulis mampu menyelesaikan penulisan makalah ini dengan tepat waktu dengan judul “RABUN DEKAT(MIOPY) ” guna pemenuhan tugas mata kuliah Sistem Persepsi Sensori. Penulis mengucapkan terima kasih kepada banyak pihak yang telah membantu terselesainya penulisan makalah ini. Terima kasih penulis ucapkan : •
•
•
Joko Sutrisno, S.Kep.Ns.M. Kes Nuryeni,S.Kep.Ns Teman-teman IKP Reguler IIIB yang tanpa henti memberi semangat
Penulis menyadari banyaknya kekurangan dalam penulisan makalah ini. Penulis memohon maaf sebesar-besarnya atas kesalahan penulisan baik disengaja maupun tidak. Penulis mengharapkan adanya kritik dan saran yang membangun guna penyempurnaan makalah ini.
Kediri, 05 Januari 2011
Tim Penulis
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“Seo “Seora rang ng anak anak pere peremp mpua uan, n, 9 Tahu Tahun n dian dianta tarr oleh oleh Ibun Ibunya ya ke Poli Polikl klin inik ik Mata Mata deng dengan an kelu keluha han n suli sulitt memb membac acaa tuli tulisa san n di papa papan n tulis.kakak dan ibunya memakai kaca mata”
PEMBAHASAN KASUS 3
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PENDAHULUAN
I.
LATAR BELAKANG MASALAH Orang Orang kota kota bisa bisa dibila dibilang ng memil memiliki iki resiko resiko lebih lebih tinggi tinggi memili memiliki ki cacat cacat mata mata dibanding orang yang ada di desa. Faktanya adalah bahwa kebanyakan orang di kota menghabiskan banyak waktu bekerja atau berada di tempat yang jarak pandang yang tidak jauh. jauh. Contoh Contoh aktifi aktifitas tasnya nya adalah adalah sepert sepertii bekerja bekerja di depan depan komput komputer, er, membac membacaa buku, buku, bekerja di dalam ruangan tertutup yang sempit, dsb. Hasilnya mata kita yang tadinya tidak memiliki masalah melihat jauh kini menjadi buram jika melihat ben da yang jaraknya jauh. Melihat bintang di langit yang tinggi pun jadi berpendar berbayang. Hal tersebut biasa disebut dengan miopi atau rabun jauh. Rabun jauh merupakan gangguan pada mata yang dianggap wajar atau lumrah oleh sebagian besar orang. Banyak di antara kita yang terserang jenis gangguan kesehatan mata mata terseb tersebut ut karena karena mudah mudah mengid mengident entifi ifikas kasii sepert sepertii memakai memakai kacamat kacamataa atau atau sulit sulit mengenali orang dan membaca huruf kecil dari jarak jauh. Mata rabun jauh sulit untuk disembuhkan disembuhkan serta cenderung cenderung bertambah bertambah parah, sehingga diperlukan pencegahan atau penghindaran terhadap miopi mata. Untuk itu seseorang harus memperhatikan kesehatan matanya dengan menjaga keseimbangan jarak pandang kita antara yang jauh dan yang dekat. Jaga jarak pandang dan segera istirahat mata jika sudah terlalu lama melihat dekat agar otot mata kita tidak stress dan kaku.
II.
RUMUSAN MASALAH
1.
Apakah pengertian dari miopi?
2.
Apakah etiologi dari rabun jauh (miopi)?
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5.
Apakah pa patofisiologi mi miopi?
6.
Bagaimana penat natalaksanaan miopi? pi?
III.
TUJUAN PEMBELAJARAN
1.
Mengetahui definisi miopi
2.
Mengetahu ahui et etiologi ogi ra rabun bun ja jauh( uh(miopi) pi)
3.
Meng Menget etah ahui ui klas klasif ifiikas kasi rabun abun jauh( auh(mi miop opi) i)
4.
Meng Menget etah ahui ui mani manife fest stas asii klin klinis is rabu rabun n jauh jauh (mio (miopi pi))
5.
Meng Menget etah ahui ui pato patoffisio isiollogi ogi rab rabun un jauh auh (mi (miop opi) i)
6.
Meng Menget etah ahui ui pena penattalak alakssanaa anaan n rab rabun un jauh auh (mi (miop opi) i)
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BAB II ISI
1.1.
Definisi Rabun Ja Jauh (M (MIOPI) Penderita Myopia bisa melihat benda dari jarak dekat dengan jelas. Namun pada
jarak jauh benda tampak kabur sehingga membuat kepala menjadi pusing. Jika anak anda merasa pusing ketika melihat tulisan di papan tulis di ruangan kelasnya dan pandangannya kabur, kemungkinan dia menderita Myopia. Myopia
bera berasa sall
dari dari baha bahasa sa Yuna Yunani ni yang yang arti artiny nyaa
“Pan “Panda dang ngan an Deka Dekat” t”
(“nearsigh (“nearsightednes tedness”). s”). Ini karena kerusakan mata yang menghasilkan menghasilkan fokus pandangan
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Rabun jauh dikenal juga dengan istilah myopia/miopi, atau sering dikatakan
sebagai mata minus – karena koreksinya ada yang bisa dibantu dengan kacamata atau nearsightedness. lensa kontak minus, dalam bahasa Inggris disebut nearsightedness. Rabun jauh adalah kelainan refraksi pada mata yang menyebabkan fokus
citra jatuh di depan retina ketika mata tidak berakomodasi. Tentu saja keadaan ini membuat mereka yang menderita rabun jauh tidak dapat melihat objek yang letaknya jauh secara jelas, namun tidak bermasalah jika melihat objek yang dekat dengan mata. Miopia ( penglihatan dekat atau rabun jauh ) kemampuan refraksi mata terlalu
kuat. Sinar sejajar yang masuk kemata dlm ke adan istirahat (tanpa akomodasi)akan dibiaskan membantu bayangan jatuh didepan retina atau makula lutea
1.2.
ETIOLOGI MIOPI Ada dua hal yang secara umum menyebabkan rabun jauh secara anatomis, yaitu bola mata yang terlalu lonjong atau kornea yang terlalu melengkung, sehingga bayangan tidak tepat jatuh di retina, namun justru di depannya. Kebalikan dari kondisi ini dikenal sebagai rabun dekat (hiperopia). Adanya Adanya faktor genetik menyeb menyebabk abkan an seseor seseorang ang yang yang terlah terlahir ir di keluar keluarga ga dengan riwayat rabun jauh memiliki kemungkinan munculnya rabun jauh juga di masa kehidupannya. Kecurigaan saat ini adalah pada sebuah gen PAX6 paired (paired box gene 6 )
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Etiologi miopia belum diketahui secara pasti. Ada beberapa keadaan yang dapat menyebabkan timbulnya miopia seperti alergi, gangguan endokrin, kekurangan maka makanan nan,, here heredi dite ter, r, kerj kerjaa deka dekatt yang yang berl berleb ebih ihan an dan dan kekur kekurang angan an zat zat kimi kimiaa (kekurangan kalsium, kekurangan vitamin) (Desvianita cit Slone, cit Slone, 1997). Pada mata miopia fokus sistem optik mata terletak di depan retina, sinar sejajar yang masuk ke dalam mata difokuskan di dalam badan kaca. Jika penderita miopia tanpa koreksi melihat ke objek yang jauh, sinar divergenlah yang akan mencapai retina sehingga bayangan menjadi kabur. Ada dua penyebab yaitu : daya refraksi terlalu kuat atau sumbu mata terlalu panjang (Hoolwich, 1993). Miopia Miopia yang yang sering sering dijump dijumpai ai adalah adalah miopia miopia aksial aksial.. Miopia Miopia aksial aksial adalah adalah bayangan jatuh di depan retina dapat terjadi jika bola mata terlalu panjang. Penyebab dari miopia aksial adalah perkembangan yang menyimpang dari normal yang di dapat secara kongenital pada waktu awal kelahiran, yang dinamakan tipe herediter. Bila karena peningkatan kurvatura kornea atau lensa, kelainan ini disebut miopia kurvatura (desvianita cit Slone, cit Slone, 1997).
Berikut ini adalah hal-hal yang bisa menyebabkan mata minus : 1.
Jara Jarak k terl terlal alu u dekat dekat mem membac bacaa buku, buku, men menont onton on tel telev evis isi, i, ber berma main in
videogames, main komputer, main hp ponsel, dll. Mata yang dipaksakan dapat
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4.
Kebia Kebiasa saan an bur buruk uk yan yang g dapat dapat men mengg ggang anggu gu kes keseha ehata tan n mata mata kit kitaa sepe sepert rtii
membaca sambil tidur-tiduran, membaca di tempat yang gelap, membaca di bawah sinar matahari langsung yang silau, menatap sumber cahaya terang langsung, dan lain sebagainya. 5.
Terlal Terlalu u lama lama mata mata berad beradaa di di bali balik k media media transp transpara aran n yang yang tidak tidak cocok cocok untu untuk k
mata dapat mengganggu kesehatan mata seperti sering kelamaan memakai helm, lama memakai kacamata yang tidak sesuai dengan mata normal kita, dan sebagainya. 6.
Kekur Kekurang angan an giz gizii yang yang dib dibut utuhk uhkan an mat mataa juga juga bisa bisa mem mempe perl rlem emah ah mata mata
sehingga kurang mampu bekerja keras dan mudah untuk terkena rabun jika mata bekerja terlalu diporsir. Vitamin A, betakaroten, ekstrak billber
1.3 1.3.
KLAS LASIFIK FIKASI RABU RABUN N JAU JAUH (MI (MIOPI) PI) Miopia dibagi berdasarkan beberapa karakteristik sebagai berikut :
•
Menurut jenis kelainannya, Vaughan membagi miopia menjadi : o
Miopia aksial, dimana diameter antero-posterior dari bola mata lebih panjang dari normal.
•
o
Miopia kurvatura, yaitu adanya peningkatan curvatura kornea atau lensa.
o
Miopia indeks, terjadi peningkatan indeks bias pada cairan mata.
Menurut perjalanan penyakitnya, miopia di bagi atas (Ilyas, 2005) : o
Miopia stasioner yaitu miopia yang menetap setelah dewasa. Miopia progresif, yaitu miopia yang bertambah terus pada usia dewasa akibat
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Miopia ringan 1-3 dioptri
Miopia sedang 3-6 dioptri
Miopia berat > 6 dioptri
Menurut timbulnya oleh Lendner dibagi atas (Rahman,1992) :
•
Kongenital
Infantil
Yuvenil
Secara klinik dan berdasarkan perkembangan patologi yang timbul pada mata, maka
•
miopia dibagi atas (Ilyas, 2003) : o
Miopia simple
o
Miopia patologi
1.4.MANIFES 1.4. MANIFESTASI TASI KLINIS Miopi sering terlewatkan. Terutama pada fase awal di mana gangguan penglihatan yang terjadi sangat minim. Beberapa gejala yang mungkin timbul pada fase-fase awal •
Pusing ketika membaca
•
Agak kabur ketika melihat jauh
•
Sering memicingkan mata ketika melihat jauh
•
Sering mengedipkan mata bila melihat dekat
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3. Indeks bias bias mata lebih lebih tinggi tinggi dari normal normal,, misalnya misalnya pada diabetes diabetes mellit mellitus. us. Kondisi ini disebut miopia indeks 4.
Miopi Miopi kare karena na perub perubaha ahan n posisi posisi lensa lensa Posisi lensa lebih ke anterior, misalnya pasca operasi glaucoma
1.6.
PENATALAKSANAAN Pada pemeriksaan oleh dokter, penderita rabun jauh akan sangat mudah membaca kartu baca Jaeger (kartu baca dekat), namun menemukan kesulitan saat diminta mem baca kartu baca Snellen (kartu baca jauh). Beberapa pemeriksaan standar oftalmologi akan dilakukan, dan mungkin beberapa pemeriksaan pelengkap seperti phoropter seperti phoropter dan dan retinoscope. retinoscope.
1.
Kacamata Koreksi dengan lensa sferis negatif terlemah yang menghasilkan tajam penglihatan terbaik
2.
Lensa kontak Untuk : anisometropia Myopia tinggi
3.
Bedah refrakstif a. bedah refraktif kornea : tindakan untuk mengubah kurvatura permukaan anterior kornea ( Excimer laser, operasi lasik ) b. bedah refraktif lensa : tindakan ekstraksi lensa jernih, biasanya diikuti dengan implantasi lensa intraokuler
4.
LASIK
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8. Makanl Makanlah ah makanan makanan yang yang bermanf bermanfaat aat bagi mata mata anda seper seperti ti vitamin A, Beta Karotin, dan sebagainya.
1.7. 1.7. GAM GAMBAR BAR
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ANAK AGUNG D.A (01) ANGGA DINDA PRADANA (04) ERMA NUR FADILAH (22) ERNA AGUSTINA (24) NELY INDAH RAHMAWATI (47) RETNO AYU. K (55) SIGMA WARISTAMA (60)
PROGRAM STUDI ILMU KEPERAWATAN SEKOLAH TINGGI ILMU KESEHATAN SURYA MITRA HUSADA KEDIRI 2010
KATA PENGANTAR
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Tim Penulis
Scenario Kasus 4 (katarak senilis)
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pada usia lanjut (senil) tapi dapat terjadi secara kongenital. Akibat infeksi virus saat pertu pertumbu mbuhan han janian janian , genetik genetik dan ganggua gangguan n perkem perkembang bangan; an; kelain kelainan an sistem sistemik ik atau atau metabolik, seperti Diabetes Mellitus. Untuk itu seseorang harus memperhatikan kesehatan matanya dengan menjaga pol polaa hidu hidup p seha sehat. t. Sepe Sepert rtii mula mulaii meni mening ngga galk lkan an alko alkoho holl dan dan roko rokok k kare karena na dapa dapatt mengakibatkan katarak. Membersihkan dan menggunakan obat mata sesuai anjuran dan indikasinya.
II.
RUMUSAN MASALAH
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ISI
1.1. Definisi KATARAK SENILIS
Katarak merupakan keadaan di mana terjadi kekeruhan pada serabut atau bahan lensa lensa di dalam dalam kapsul kapsul lensa lensa (Sida (Sidart rtaa Ilyas, Ilyas, 1998). 1998). Katara Katarak k adalah adalah proses proses terjad terjadiny inyaa opasitas secara progresif pada lensa atau kapsul lensa, umumnya akibat dari proses penuaan yang terjadi pada semua orang lebih dari 65 tahun (Marilynn Doengoes, dkk. 2000).
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Berdasarkan lokasi, katarak senilis dapat dibagi menjadi : •
Nuclear sclerosis, merupakan perubahan lensa secara perlahan sehingga menjadi keras dan berwarna kekuningan. Pandangan jauh lebih dipengaruhi daripada pandangan dekat (pandangan baca), bahkan pandangan baca dapat menjadi lebih baik. Penderita Penderita juga mengalami kesulitan membedakan warna, terutama warna biru
•
Kortic Kortical, al, terjad terjadii bila bila seratserat-ser serat at lensa lensa menjad menjadii keruh, keruh, dapat dapat menyeb menyebabk abkan an silau silau terutama bila menyetir pada malam hari. Kekeruhan mulai dari tepi ekuator berbentuk jeruji menuju korteks anterior dan posterior
•
Posterior subcapsular, merupakan terjadinya kekeruhan di sisi belakang lensa. Katarak
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Epitel lensa bertambah usia
Penu Penuru runa nan n den densi sita tass sel sel epit epitel el
Akunulasi dari serpihan-serpihan kecil epitel
Gangguan pembentukan serat
Peny Penyim impa pang ngan an dife difere rens nsia iasi si sel sel ser serat at lens lensa a
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1.
Ekstraksi Ekstraksi katarak katarak intraka intrakapsuler psuler : Adalah Adalah pengangkatan pengangkatan seluruh seluruh lensa lensa sebagai satu kesatuan.
2.
Ekstra Ekstraksi ksi katara katarak k ekstr ekstrakap akapsul suler er Merupakan tehnik yang lebih disukai dan mencapai sampai 98 %
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- Observasi tanda-tanda disorientasi. - Pendekatan dari sisi yang tak dioperasi, bicara dengan menyentuh. menyentuh. - Perhatikan tentang suram atau penglihatan kabur dan iritasi mata, mata, dimana dapat terjadi bila menggunakan tetes mata. - Ingatkan klien klien menggunakan kacamata katarak yang tujuannya memperbesar memperbesar kurang lebih 25 persen, pelihatan perifer hilang dan buta titik mungkin ada.
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