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Oogheelkunde 2: Oogleden van Sander Beers
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Samenvatting van HC 2 van Oogheelkunde, blok D, jaar 2.
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Oogheelkunde2: Oogleden
Anatomie:
- Stevigheid:
o Tarsale plaat
o Septum (loopt boven de tarsale plaat)
- Beweeglijkheid:
o 4 spieren
- Traanfilm fysiologie:
o Ooglidrand
4 spieren:
1. M. frontalis: heft de wenkbrauw
2. M. orbicularis oculi: sluit de oogleden
3. M. levator palpebrae: heft het bovenooglid
4. M. tarsalis superior (Müller): heft het bovenooglid
, Functie oogleden:
- Bescherming van het oog
- Traanfilm fysiologie:
o Lipiden, water
o Verversing traanfilm door knipperen
Gemiddeld 12x per minuut
Ooglidsluiting: traansecretie + traanpunten dicht + compressie traanzak >>
traanwegsysteem leeg + relatief vacuüm
Ooglidopening: wegzuigen van tranen door het relatieve vacuüm
Dimensies:
Blepharitis en Meibomitis
Symptomen:
- Irritatie
- Branderig
- Waas
- Wrijven
Kenmerken:
- Schilfers
- Vet
Blepharitis:
- Anterieure blepharitis
- Blepharitis squamosa
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