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Diagnostyka i leczenia wrzodów rogówki u psów i kotów
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Wyszukaj w serwisie


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Wszystko, co lekarz praktyk powinien wiedzieć na temat diagnostyki i leczenia wrzodów rogówki u psów i kotów


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Budowa rogówki oraz przebieg procesów regeneracyjnych

Rogówka wraz z twardówką tworzą jedną z trzech warstw gałki ocznej – błonę włóknistą. Rogówka łączy się ze spojówką gałkową i twardówką w miejscu określanym rąbkiem. Najważniejszą cechą rogówki jest jej przezierność. Jest to możliwe dzięki temu, że nie ma ona w sobie naczyń krwionośnych, melaniny oraz nie występują w niej procesy rogowacenia.

Dodatkowo ma gładką powierzchnię optyczną, regularny układ włókien kolagenowych oraz stosunkowo niewielkie zagęszczenie komórek. Każde zachwianie równowagi w tym układzie może spowodować częściową lub całkowitą utratę jej przezierności, a przez to upośledzić zdolności widzenia zwierzęcia. Znajomość anatomii rogówki jest niezbędna do zrozumienia mechanizmów zachodzących podczas jej uszkodzenia, oceny głębokości wrzodu oraz konsekwencji z tym związanych, a także procesów odbudowy ubytku.

Rogówkę tworzą cztery warstwy komórek:

Nabłonek rogówki – u psów i kotów jest to nabłonek wielowarstwowy (5-7 warstw), płaski, nierogowaciejący. Składa się z:

  • błony podstawnej,
  • komórek walcowatych nabłonka podstawnego,
  • komórek pośrednich,
  • komórek powierzchownych (płaskich).

Komórki podstawne stanowią najgłębszą warstwę nabłonka. Ulegają one podziałom, a nowo powstające komórki są przesuwane w stronę zewnętrzną, w trakcie tego procesu ulegają spłaszczeniu, tracą organelle komórkowe i stają [...]

Ten materiał dostępny jest tylko dla użytkowników, którzy są lekarzami weterynarii
lub posiadają wykupioną subskrypcję.
Masz aktywną subskrypcję?
Nie masz jeszcze konta w serwisie? Dołącz do nas

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Mogą zainteresować Cię również


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Wizytówka firmy


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Sklep


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Poznaj nasze serwisy