Iningi lethu lithatha kancane kalula ukuxhumana kwama-lens ukuze kulungiswe izinkinga zombono ezivamile. Kodwa-ke, amalensi okuxhumana nawo asetshenziselwa ukuletha izindawo zokuphulukisa kubantu abanezifo zeso. Ama-lens othintana nawo asetshenziselwa ukuhlinzeka nge-bandage yezinhlobo zokuthuthukisa ukuphulukiswa nokunciphisa ubuhlungu obuvela ezimweni ezithile zomhlaba. Kodwa-ke, ososayensi bakhiqiza ama-lens oxhumana nabo namuhla aqukethe imithi noma izinto eziphilayo ukuze babuyisele impilo ye-eye.
I-lens entsha yezokwelapha, i-Prokera, isetshenziselwa odokotela bezilanga ukulungisa nokuphulukisa isifo somzimba. I-Prokera yile divayisi equkethe i-lens yokuxhumana eyenziwe ngokucacile, okuguquguqukayo futhi yakha isilwane se-amniotic membrane.
Iyini i-memniane ye-amniotic?
Ama-amniotic tissue asuselwa ku-placenta. I-placenta yizicubu ezinika ukudla nokuvikela ingane ekhulayo ngesikhathi sokukhulelwa. Iqukethe nezicubu ezinikezela ukuphulukisa izakhiwo. Amathissi amniotic athathwa emasimini aphilile, avumayo abangenazo izifo ezithathelanayo emva kokulethwa kwesigaba C. Izicubu zihlolwe ngokugcwele futhi zihlolwe izifo.
I-Prokera yenza ini?
I-Prokera inikeza izakhiwo zokuzivikela nokuphulukisa okwenza izicubu zeso ziphulukise ngokushesha, zenze ubuhlungu obuncane, ukunciphisa ukonakala nokuncipha ukuvuvukala. Nakuba bazi ukuthi kusebenza, usosayensi akaqondi ngokuphelele ukuthi linikeza lezi zakhiwo zokuphulukisa.
Yiziphi izimo i-Prokera eziphatha ngayo?
I-PROKERA isetshenziswa ngokuyinhloko ukuphatha okulandelayo:
- i-keratitis
- ukushisa kwamakhemikhali
- i-eye eye syndrome
- ukuphindaphindiwe kwamaphutha okuphindaphindiwe
- izilonda zamakholomu
- okungahleliwe okuvuthayo ukuvuvukala
- ama-corneal abrasions kanye nokuhlukunyezwa
- i-katalatopathy enobudlova
- izifo ezithathelwanayo
Odokotela bafaka kanjani i-Prokera?
Inqubo yokufaka ilula kakhulu.
Isiguli sihlezi esihlalweni sokuhlola iso bese ikhanda lakhe libhekene ne-backrest. Ezinye iziguli zingase zikhohliswe esihlalweni. I-lens contact lens inkulu kune-lens yokuxhumana evamile ngakho odokotela ngezikhathi ezithile bayokufaka i-clamp ye-ephod ukuze ubambe iso elivulekile. Kulezi ziguli eziningi, i-Prokera izofakwa ngokufanayo kumalensi wokuxhumana avamile. Isiguli sizobukela phansi kanti udokotela uzofaka idivayisi phezulu ngaphansi kwejwabu leso eliphezulu, udonsele umqubu ophansi bese uphonsa indandatho engezansi ngaphansi kwejwabu leso eliphansi. Izindandatho zangaphandle ze-lens ziyancipha futhi ngezinye izikhathi zidala ukungakhululeki. Uma i-lens ingakhululekile, udokotela angavala kancane ijwabu leso. I-lens ngokuvamile ishiywe ilanga izinsuku ezingu-10, nakuba udokotela angakhetha ukukukhipha maduzane noma ezinsukwini ezimbalwa kamuva. Kuye ngesimo, isiguli sibonakala nsuku zonke noma cishe ngesonto.
Umsebenzi we-Prokera?
I-Prokera inikeza ukuvikelwa kwama mechanical kwijwabu leso kanye nemvelo engaphandle. Okwenza i-Prokera ibe ngcono kune-lens yokuxhumana ye-bandage evamile ukuthi ivumela ubuso beso ukuphulukisa ngokunciphisa izici ezithile zokukhula kanye namakhemikhali avuselelayo angabangela ukuvuvukala okukhulu nokukhwabanisa.
Futhi kunciphisa amathuba emithwalo yegazi engavamile yokwenza. Ngaphezu kwalokho, i-Prokera inikeza izakhiwo ezithile zokulwa nokutheleleka.
Usukulungele i-Prokera?
I-Prokera iyidivayisi ye-lens yokuxhumana yezokwelapha engakwazi ukulingana ne-cornea enezifo ezinokuvutha okungapheli lapho imithi ejwayelekile noma ukwelashwa kwehluleka. Kuphephile futhi kusebenza futhi izicubu zilawulwa yi-FDA. I-lens ekhethekile yokuxhumana kufanele idlule amazinga amaningi wokulawula ikhwalithi ngaphambi kokuba isetshenziswe udokotela wakho. Umshuwalense wombono omkhulu kanye noMedarela uhlanganisa idivayisi kodwa ukugunyazwa kwangaphambili kuyadingeka ezimweni eziningi.
SOURCE: Hung, et al. I-memni ye-amniotic egcinwa yedwa yokuziphendulela kokuguguleka komzimba. I-Journal ye-Clinical Exp. I-Ophthalmology, ngo-2013.