I-Keratoconus yimeko echaphazela i-cornea, isakhiwo esicacileyo se-dome-like in front of your eye. Kancinci kwaye ngokuqhubekayo, i-cornea iqalisa ukukhupha ngaphandle kwaye ibe yinyani.
Nge-keratoconus, uya kuba neyona nto ingasondela kwaye ungathuthukisa inani elikhulu nelingavumelekanga njenge-astigmatism. Njengoko imeko yakho iqhubeka, i-cornea inokuvelisa izicubu ezinqabileyo.
Kwezinye iimeko, ukunyuka kwe-cornea kunokuba kubaluleke kangangokuba kunokubonakala ngokucacileyo ngaphandle kwe-microscope.
Ukulungiswa kombono
Njengoko i-keratoconus iqhubekela phambili, unokuqala ukuvavanya okanye ukuphazamisa umbono onzima ukulungisa kunye neeklasi. Xa oku kwenzeka, i-lens zixhaswa ngugqirha weziliso lakho. Ukuba i-cornea yakho iphosakele kakhulu, i -gesi egxininisekayo i-lens okanye i-lens ezi-soft-rigid hybrides zicetyiswa. Ezi iilensi zivame ukugubha ngokupheleleyo i-cornea, kwaye kunye nento ebizwa ngokuba yi-lens ye-tear (iinyembezi ezizalisa phantsi kwe-lens), imask astigmatism engavumelekanga, ukunyuka okanye ukuphazamiseka. Nangona le ndlela isebenza kakuhle kwiimeko ezininzi, abanye abantu abanesifo se-keratoconus baxhamla-i-lens ngokungavumiyo, mhlawumbi ngenxa yamehlo omile okanye mhlawumbi ngenxa yokungahambi kakuhle kunye nokukhawuleka okanye ukukhwabanisa kwe-cornea.
Kwamanye abantu abanekeratoconus, i-cornea iyaba nzima kangangokuba kunzima ukufumana i-gesi egxininisekayo i-lens ebonakalayo ephuma ngaphandle kwamehlo abo.
Aba bantu baxhatshazwa kwaye bahlutywa ngokomzwelo. Ngenxa yokuba iziglasi zelanga azikwazi ukulungisa ingxaki yabo yombono, kwaye i-lens yokudibanisa i-lens ayinakonwaba kakhulu, ikhokelela ubomi obuya kuhlawulela umboniso wabo owehla. Xa ukhetho lwentsimbi luphelile, izigulane ze-keratoconus ngamanye amaxesha zishiywa ukhetho lwonyango olubandakanya utyando kwaye mhlawumbi ukufakelwa kwe-corneal.
Ifonibhuku ezantsi
Kungekudala, izinto ezintsha zeteknoloji ezinxibelelwano ezithambileyo ziye zaphuhliswa ezinokunceda abantu ababaxhomekeke kwizinto zokunxibelelana kwamalenti eziqhelekileyo. Iilensi ezimbini ezithambileyo zenziwe: NovaKone (Alden Optical) kunye neKerasoft IC (iBausch & Lomb).
- I-NovaKone: I-NovaKone lens, eyaziswa ngo-2011, inikezela ubuncwane bobuncwane obuhlanu ekuncedeni ukuphazamisa i-distortion kunye ne-astigmatism engavumelekanga. Yintoni eyenza le nto iyingqayizivele kwaye iphumelele ukuba i-optometrists ifaneleke kukuba indawo yangasemva ye-lens iqulethe i-curve eyahlukileyo kunokuba inxalenye yecandelo le-peripheral. I-curvature ephakathi kunye neeparvurhu zephaya zingatshintshwa ngokuzimela omnye komnye ukuphucula ukulungelelaniswa kwelensi, kwaye iilensi zingatshintshwa ngokuzimela. Kwixesha elidlulileyo, ii-lens ezithambileyo ziza kudala imeko apho i-cornea ayifumananga ne-oksijini eyaneleyo kwi-cornea kwaye yakha indawo engafanelekanga kwimeko. Ngomlingo weNovaKone, ukuchithwa kweembulazi ngaphantsi kwe-lens kunika i-oxygen efanelekileyo. Xa isigulane kunye ne-optometrist eyanelisekile ngenduduzo nombono, iilensi ziyalwe kwipakethi enye ukuze i-lens nganye ithathe indawo nganye emva kweenyanga ezintathu.
- I-Kerasoft IC: I-Kerasoft IC lense, eyaziswa ngo-2012, yenziwe ngezinto ezibizwa ngokuba yi-Definitive enomxholo ophezulu wamanzi wama-74 ekhulwini kwaye iqukethe impahla e-silicone evumela ukuba i-oksijeni ephezulu iphele kwi-cornea. Ngenxa yoko, ubukhulu be-lens abuyi kudala indawo engafanelekiyo yendalo yeliyochemical eye. NjengaLenvaKone lens, i-Kerasoft IC inomgca ophakathi kunye nomjikelezo wendlela yokujikeleza engaguquleka ngokuzimeleyo. Ngaphezu koko, ugqirha unokutshintsha iindawo ezithile zengqungquthela yokuphucula ukuphucula indlela ilensi ifana ngayo kwiso. I-lens yokuqala ekhethwe ngu-optometrist isekelwe kwimilo ye-corneal kunye nohlobo lwe-keratoconus, kunokuba nje i-curne ye-cornea. Njenge-NovaKone lens, le lensi iyafumaneka nakwi-pack-four pack pack.
Oko Okufanele Uyazi
Nangona i-lens ezithambileyo zisetyenziswe kwixesha elidlulileyo kwizigulane ze-keratoconus, ukulungelelaniswa kokufanelekileyo, umbono olungiswe kakuhle, okanye ixesha elifanelekileyo lokugqoka kufuneka lenziwe. Ngokufika kwezi lensisi ezintsha, izigulane ze-keratoconus zinezinye, mhlawumbi zikhetha ukhetho oluthe tye ngakumbi ukulungisa iingxaki zabo zombono ezibandakanya i-keratoconus.
Umthombo:
UBrujic Mile, uMiller J. "I-Side of Comfortable Keratoconus," Ukuhlaziywa kweCornea & Contact Lens, umagazini omncinane we-Review of Optometry, uPp 21-22, 25 Jan 2012.