Izinyembezi zakho ngokusobala zenziwe ngamanzi ngosawoti, njengoba usunambithekile lapho ukhale kahle. Kodwa ingabe kunezinye izithako ezinyembezi? Ingabe ezinye izinyembezi zihlukile kwabanye?
Izinyembezi zikhiqizwa ezigulini ezilahlayo (izinyembezi zokudabula) ezisemaphethelweni akho amajwabu amehlo akho. Lezi zinhlayiya ziveza izinyembezi ezivela egazini lakho legazi, ukhethe ezinye izingxenye kodwa hhayi ezinye.
Izingxenye eziyisisekelo zezinyembezi yizi:
- Amanzi
- Ama-electrolytes (sodium, potassium, chloride, bicarbonate, magnesium, ne-calcium). Yilokho okwenza izinyembezi zibe ukunambitheka okusawoti.
- Amaprotheni (lysozyme, lactoferrin, lipocalin, ne-IgA). Izinyembezi zine-10 kuphela yeprotheyini ye-plasma yegazi.
- Lipids
- Ama-Mucins
Ukwakhiwa Kwezinyembezi Eziyisisekelo Ezihlobisa I-Eye
Izinyembezi zidlala indima ebalulekile ekusilondolozeni impilo. Izinyembezi zigcina ubuso bamehlo ethu abuhlanzekile futhi bunomsoco futhi kusize ukuvikela amehlo ethu emonakalweni. Nakuba benza sengathi abengekho amanzi, izinyembezi zethu empeleni ziyinkimbinkimbi. Izinyembezi zenziwe nge-mucus, amanzi, namafutha futhi ngamunye udlala indima ebusweni.
- Izingubo zikaMucus ebusweni beso futhi kusiza ukubopha ungqimba lwezinyembezi emehlweni. Ngaphandle koqweqwe oluhle lwe-mucus, izindawo ezomile zingase zenzeke ku- cornea , isakhiwo esicacile se-dome esingaphambi kweso.
- Amanzi angaphezulu kwesisombululo saline (usawoti) equkethe amavithamini ahlukahlukene kanye namaminerali abalulekile ekusebenzeni kwamaseli avamile. Lezi zondlo zibalulekile ukugcina ungqimba oluphezulu lwamaseli ebusweni beso, i-epithelium, enempilo nokusebenza ngokujwayelekile.
- Amafutha wefilimu yezinyembezi avimbela ukugeleza kwezinyembezi. Abanye abantu abenzi amafutha okwanele (noma ngezinye izikhathi amafutha amaningi), okubangelwa amehlo abomile . Uma ingxenye yamafutha ingavamile, izinyembezi ziphuma ngokushesha.
Izinyembezi zethu nazo ziqukethe ama-antibiotic emvelo okuthiwa i-lysozymes. Ama-Lysozymes asiza ukugcina amehlo ephilile ngokulwa nama-bacterium kanye nama-virus.
Ngenxa yokuthi i-cornea ayinayo imithwalo yegazi, izinyembezi nazo zinikeza indlela yokuletha izakhi kumaseli awo.
Izinyembezi ze-Reflex Ezivela E-Irritants
Uma iso lakho licasuliwe, liveza izinyembezi ezicabangelayo ukuze kukhishwe ama-irritants. Mhlawumbe uchitha izinyembezi ezimbalwa lapho ukhipha u-anyanisi noma uma uthola uthuli emehlweni akho.
Izinyembezi Zemizwelo
Izinyembezi ozichithayo uma unqotshwe imizwa unamaprotheni amaningi kunezinyembezi ezisuka ku-irritants. Esikhathini sokuhlola okuvamile, umcwaningi wathola ukuthi izinyembezi zomzwelo zazinamahomoni amaningi, kuhlanganise ne-prolactin, i-hormone ye-adrenocorticotropic, ne-leucine enkephalin.
Izinyembezi Uma Ulala
Uma ulala, ama-ducts akho ayengeze amanzi namaprotheni amancane ezinyembezini zakho kodwa akhulisa inani lamagciwane, futhi amaseli okulwa nokutheleleka nawo abuyele esikhwameni se-conjunctival.
Izinyembezi Njengoba Ugugile
Njengoba usukhulile, uvame ukhiqiza izinyembezi ezimbalwa ngevolumu, futhi lokhu kungaholela ekuhlaleni amehlo omile. Ama-proteine ama-lacrimal ducts ngokuvamile afaka izinyembezi zehla.
Umthombo:
> Bartlett JD, i-SD yaseJaanus. I-Clinical Ocular Pharmacology, Edition 5 . St. Louis, MO: Butterworth Heinemann; 2008.