Ha ho pelaelo hore meokho ea hau e entsoe ka metsi ka letsoai, kaha u latsoitse ha u lla. Empa na ho na le lintho tse ling tsa meokho? Na meokho e fapane le ea batho ba bang?
Lithaba li hlahisoa ka litšoelesa tse phatsimang (likhahla) tse ka ntle tsa mahlo a hao. Litšoelesa tsena li hlahisa meokho ea mali a mali a hao, ho khetha likarolo tse ling empa eseng tse ling.
Likarolo tsa motheo tsa meokho ke:
- Metsi
- Electrolyte (sodium, potasiamo, chloride, bicarbonate, magnesium le calcium). Tsena ke tsona tse etsang hore meokho e be bonolo.
- Liprotheine (lysozyme, lactoferrin, lipocalin le IgA). Meokho e na le karolo ea leshome feela ea protheine ea mali a mali.
- Lipids
- Mucins
Sebopeho sa Meokho ea Basal e Thetsang Leihlo
Lithaba li phetha karolo ea bohlokoa ho re boloka re phetse hantle. Meokho e boloka mahlo a mahlo a bona a hloekile a bile a le mongobo mme a thusa ho sireletsa mahlo a rona ho senya. Le hoja li etsa hore li bonahale li le metsi feela, meokho ea rona e hlile e rarahane haholo. Lithaba li entsoe ka li-musik, metsi le oli 'me e' ngoe le e 'ngoe e na le karolo mahlong.
- Liaparo tsa mucus tse ka holim'a leihlo 'me li thusa ho tlama lera la lintši mahlong. Ntle le phepo e ntle ea mucus, mabala a omeletseng a ka 'na a thehoa holim'a cornea , sebopeho se hlakileng se kang sekhahla ka pel'a leihlo.
- Metsi a hlile a na le tharollo ea saline (letsoai) e nang le livithamine tse fapa-fapaneng le liminerale tsa bohlokoa bakeng sa selefouno e tloaelehileng. Limatlafatsi tsena ke tsa bohlokoa bakeng sa ho boloka leraele tse ka hodimo tsa leihlo, epithelium, bophelo bo botle le ho sebetsa ka mokhoa o tloaelehileng.
- Oli ea filimi ea ho lla e thibela ho tsoa ha meokho. Batho ba bang ha ba etse oli e lekaneng (kapa ka linako tse ling oli e ngata haholo), e hlahisang mahlo a omileng . Haeba karolo ea oli e sa tloaelehang, meokho e tsoa ka potlako.
Meokho ea rōna le eona e na le lithibela-mafu tse tloaelehileng tse bitsoang lysozymes. Li-Lysozyme li thusa ho boloka mahlo a leihlo a phela hantle ka ho loantša libaktheria le likokoana-hloko.
Hobane ha cornea e se na methapo ea mali, meokho e boetse e fana ka mokhoa oa ho tlisa limatlafatsi lisele tsa eona.
Mantsoe a Reflex a Tsoang ho Irritants
Ha leihlo la hao le halefisitsoe, le hlahisa meokho e senyang ho hlatsoa litlhaku. U ka 'na ua tšolla likhapha tse' maloa ha u khaola liiee kapa ha u e-ba lerōle mahlong a hao.
Meokho ea Maikutlo
Likhapha tseo u li tšollang ha u hlōloa ke maikutlo li na le liprotheine tse phahameng ho feta meokho e tsoang ho irritants. Ka tlhahlobo ea khale, mofuputsi o fumane hore meokho ea maikutlo e na le li-hormone tse ngata, ho akarelletsa prolactin, hormone ea adrenocorticotropic le leucine enkephalin.
Meokho ha U Robala
Ha u robala, likhapha tsa hau li phaella metsi le liprotheine tse seng kae empa li eketsa lenane la li-antibodies, 'me lisele tse loantšang tšoaetso li boetse li fallela mokotleng oa conjunctival.
Meokho ha u ntse u le teng
Ha u ntse u hōla, hangata u hlahisa meokho e seng mekae ka molumo, 'me sena se ka lebisa ho ba le mahlo a omileng. Liprotheine, moriri oa hao o hlabang o lla.
Mohloli:
> Bartlett JD, SD ea Jaanus. Clinical Ocular Pharmacology, Khatiso ea Bohlano . St. Louis, MO: Butterworth Heinemann; 2008.