peng fs visual [compatibility mode]
TRANSCRIPT
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SISTEM PENGLIHATAN DAN SISTEM PENGLIHATAN DAN PENGUKURAN FUNGSI PENGUKURAN FUNGSI
SISTEM PENGLIHATAN DAN SISTEM PENGLIHATAN DAN PENGUKURAN FUNGSI PENGUKURAN FUNGSI PENGUKURAN FUNGSI PENGUKURAN FUNGSI
PENGLIHATANPENGLIHATANPENGUKURAN FUNGSI PENGUKURAN FUNGSI
PENGLIHATANPENGLIHATAN
OlehOleh : dr. : dr. EuisEuis HeryatiHeryati, , M.KesM.Kes
MK. MK. PengukuranPengukuran FisiologiFisiologi--JurusanJurusan PLBPLB
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ANATOMI MATA(Bola Mata)
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ANATOMI MATA(Otot Penggerak Bola Mata)
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FISIOLOGI PENGLIHATAN(Proses Melihat)
Cahaya mengenai benda
Kornea
Celah Pupil
Lensa
Retina (bintik kuning)
Saraf mata (N.II) Otak (area 17,18,19)
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KELAINAN PENGLIHATAN
TAJAM PENGLIHATAN
NORMAL
LOW VISION
Menurut Aspek Blind (buta)Pendidikan Low Vision (kurang lihat)
Limited Vision
BUTA
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KELAINAN PENGLIHATAN(Definisi kebutaan/ketunanetraan)
Menurut Aspek medis/legal:
Bila tajam penglihatan <20/200 atau >20/200 tetapi lantang pandang <20o>20/200 tetapi lantang pandang <20
Tunanetra yang memiliki tajam penglihatan antara 20/200 dan 20/70 disebut low vision.
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GANGGUAN LANTANG PANDANG
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KELAINAN REFRAKSI :
� MIOPIA (RABUN JAUH)� HIPERMETROPIA (RABUN DEKAT)� ASTIGMATISME� PRESBIOPIAPRESBIOPIA
KELAINAN LAIN:
� STRABISMUS� BUTA WARNA
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PENGUKURAN VISUS
�APA ITU VISUS ?
�ALAT YANG DIGUNAKAN?
�V = d/D�V = d/D
�CARA PEMERIKSAAN :
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SNELLEN CHART
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Pemeriksaan Lantang Pandang
� Ukuran lantang pandang normal
� Cara pemeriksaan :
-Metode Konfrontasi dari Donder
-Campimeter
-Perimeter
-Layar Byerrum
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Tes Buta Warna
� Buku Ishihara
� Benang-benang Holmgreen
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Pemeriksaan Gerak Bola Mata
� Tes tutup buka (cover uncover test)
� Tes tutup mata (cover test)
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Pemeriksaan Refleks
� Refleks pupil
� Refleks kornea