Ngaba uhlala unxiba iiglasi? Okanye usebenzisa iilensi zokunxibelelana? Ngamanye amaxesha unqwenela ukuba ungakhululeka kuzo uze ubone ihlabathi ngokucacileyo ngaphandle koncedo, akunjalo? Namhlanje sithetha ngendlela yotyando lwelaser enokukunceda wenze iphupha elinjalo libe yinyani. Oku kubizwa ngokuba lutyando lwePRK. Makhe sijonge oku ngokulula.
Yintoni i-PRK?
Ngamafutshane, i-Photorefractive Keratectomy, okanye i-PRK, yinkqubo yotyando lwe-laser ukulungisa umbono wakho. Ibandakanya ukusebenzisa i-laser ukutshintsha kancinci imo yomaleko ocacileyo nokhuselayo ngaphambili kweliso lakho, i-cornea. Cinga nge-cornea njengelensi yekhamera. Xa ukukhanya kungena elisweni, kuyagoba kuze kuyijolise kwi-retina. Ngoko ke, ngokutshintsha kancinci imo ye-cornea, indlela ukukhanya okugxile ngayo iyatshintsha, kwaye unokubona ngokucacileyo.
Enyanisweni, le ndlela ebizwa ngokuba yiPRK yindlela eyafika ngaphambi kotyando lweLASIK abantu abaninzi abathetha ngayo namhlanje. Kodwa indlela yePRK iselunyango oluluncedo kakhulu noluthandwayo namhlanje. Ingakumbi kwezinye iimeko apho iLASIK ingenakwenzeka, iPRK sesona sisombululo silungileyo.
Zeziphi iintlobo zeengxaki zokubona ezinokunyangwa ngotyando lwe-PRK?
Utyando lwe-PRK lunokulungisa iingxaki ezininzi ezinkulu emehlweni ethu, ezibangelwa kukungajolisi kakuhle kwi-retina (impazamo ye-refractive). Makhe sijonge ukuba zeziphi.
| Impazamo yokuRefractory | Icacisiwe ngokulula |
|---|---|
| Ukubona kufutshane / I-Myopia | Izinto ezikufutshane zibonakala zicacile, kodwa izinto ezikude zibonakala zingacacanga. |
| Ukubona izinto kude/iHyperopia | Ukubona izinto ezikude ngokucacileyo, kodwa ukubona izinto ezikufutshane (umz., xa ufunda incwadi) kungabonakali. |
| I-Astigmatism | Ngenxa yokuba imilo ye-cornea ayingqukuva ngokupheleleyo, umbono okufutshane nomgama okude awubonakali kakuhle kwaye ugqwethekile. |
| I-Presbyopia (ukubona kufutshane) njengoko ukhula | Emva kweminyaka engama-40 ubudala, ukuguquguquka kwelensi yeliso kuyehla, nto leyo ebangela ubunzima bokubona kufutshane. |
Uzilungiselela njani ngaphambi kotyando?
Kukho izinto ezininzi ugqirha wakho wamehlo anokukunceda ngazo ngaphambi kotyando lwe-PRK.
- Uvavanyo lwamehlo olupheleleyo: Oku kuya kujonga umbono wakho kunye nempilo yamehlo iyonke. Kuya kujonga nezinye iimeko zempilo ezinokukuthintela ekubeni ube ne-PRK.
- Ukulinganiswa komphezulu we-cornea: Izixhobo ezikhethekileyo zisetyenziselwa ukwenza ``imephu`` ye-cornea yakho. Ezi zilinganiso zibaluleke kakhulu kunyango lwe-laser.
Eyona nto ibalulekileyo kukuba nolindelo olusengqiqweni malunga neziphumo. Oku akuyonto imangalisayo. Kubaluleke kakhulu ukuthetha ngokukhululekileyo nogqirha wakho kwaye ufumane ukuqonda okucacileyo ngento omawuyilindele emva kotyando.
Kwenzeka ntoni ngexesha lotyando?
I-PRK yinkqubo yokunyanga ngaphandle kwesibhedlele. Oko kuthetha ukuba ungagoduka ngaloo mini. Lonke olu nyango luthatha malunga nemizuzu emi-5 ukuya kweli-15 kuphela. Uvukile ngeli xesha. Kodwa ungakhathazeki, awuyi kuva ntlungu . Ugqirha uza kukufaka amathontsi abangela ukuba ungabi nazintlungu emehlweni akho.
1. Emva kokuba amehlo akho ephelelwe ngamandla, ugqirha wakho uza kususa umaleko omncinci wezicubu phezu kwe-cornea yakho, ebizwa ngokuba yi-epithelium. Oku kuza kuphinda kukhule kwiintsuku ezimbalwa.
2. Emva koko, ucelwa ukuba ujonge ukukhanya okujolisiweyo okuvela kumatshini welaser. Ngelixa ujonge, ilaser inokutshintsha i-cornea ngokuchanekileyo.
3. Ilaser iyavulwa ngelixa ujonge ithagethi. Awunakuyibona imitha yelaser, kodwa unokuva isandi esincinci "esithintithayo" esivela kumatshini. Le laser isusa izicubu ze-cornea ngononophelo olukhulu, ngaphandle kokuzifudumeza.
4. Nje ukuba unyango lwelaser lugqityiwe, ugqirha uza kubeka amanye amathontsi ambalwa eyeza esweni aze afake i-'lens yoqhagamshelwano yebhandishi' ekhethekileyo ukuze ayikhusele. Oku kuya kukhusela iliso de umaleko osusiweyo wezicubu ukhule kwakhona.
Ufanele uzinyamekele njani emva kotyando?
Ungaya ekhaya emva kotyando, kodwa kufuneka uzinyamekele ezi zinto.
- Phumla kakuhle:Phumla ngokwaneleyo kwiintsuku zokuqala ezimbalwa. Kuphephe ukwenza umthambo onzima. Kungcono ukungayi emsebenzini okanye esikolweni kangangeentsuku ezimbalwa ude ugqirha wakho akuxelele ukuba wenze njalo.
- Kuphephe ukuqhuba: Musa ukuqhuba ubuncinane iintsuku ezimbalwa emva kotyando.
- Sebenzisa amayeza kanye njengoko ugqirha wakho ekuyalele. Oku kubalulekile ukuze ufumane iziphumo ezilungileyo.
- Nxiba iiglasi zelanga: Nxiba iiglasi zelanga nanini na xa uphuma emini, ude ugqirha wakho akuxelele ukuba wenze njalo. Oku kuya kuthintela umonakalo kunye namanxeba kwi-cornea evela kwimitha ye-ultraviolet (UV).
I-PRK okanye i-LASIK, yeyiphi engcono?
Utyando lwe-LASIK ludla ngokuthandwa kuba aludingi xesha lininzi lokuchacha kwaye luneentlungu ezimbalwa. Nangona kunjalo, kwabanye abantu, i-PRK lukhetho olungcono kune-LASIK. Makhe sijonge isizathu.
| I-PRK ifanelekile kakhulu kwezi meko. | I-LASIK ifanelekile kakhulu kwezi meko. |
|---|---|
| Ukuba unengxaki yamehlo awomileyo . | Ukuba ufuna ukuchacha ngokukhawuleza uze ubuyele emsebenzini. |
| Ukuba i-cornea yakho incinci , i-PRK ikhuselekile kuba ayinqumli nesuntswana le-cornea njengakwi-LASIK. | Ukuba ufuna ukunciphisa iintlungu kunye nokungonwabi emva kotyando. |
| Ukuba uphila ubomi obuxakekileyo, njengokudlala imidlalo (kukho umngcipheko wokuba i-flap edalwe ngexesha le-LASIK iphume kwingozi enkulu). | Ukuba ubukhulu kunye nokuma kwe-cornea yakho kufanelekile kwi-LASIK. |
Khumbula into enye, akukho tyando lufanelekileyo kuye wonke umntu. Ngokuxhomekeke kwiimeko ezifana nemeko yamehlo akho kunye nendlela ophila ngayo,Ngugqirha wakho wamehlo kuphela onokukunceda ukhethe indlela efanelekileyo kuwe.
Kuthatha ixesha elingakanani ukuphiliswa?
Ukuchacha emva kotyando lwe-PRK yinkqubo ethatha ixesha.
Iintsuku ezi-3 zokuqala
Malunga neyure emva kotyando, ungaziva iintlungu kunye nokungonwabi njengoko ukuphelelwa ngamandla kuphele. Ukukrazuka kwamehlo, ukuva ukukhanya, ukuziva ngathi kukho isanti emehlweni, kunye nokubona okufipheleyo zizinto eziqhelekileyo. Oku kungalawulwa ngamayeza okudambisa iintlungu anikwe ngugqirha wakho.
Iintsuku 4 kunye ne-5
Okwangoku, umaleko wangaphandle we-cornea (i-'epithelium') uhlaziyeke ngokupheleleyo. Ukungakhululeki kuphelile kakhulu, kwaye umbono wakho uqala ukucaca kancinci. Ugqirha uza kuyisusa 'ilensi yakho yokunxibelelana yebhandishi' kwezi ntsuku.
Emva kosuku lwesi-5
Umbono wakho uza kucaca kancinci kancinci kwiiveki ezimbalwa ezizayo. Kungathatha inyanga okanye ngaphezulu ukuba umbono wakho uphinde uphile ngokupheleleyo kwaye uzinze. Abanye abantu banokufumana utshintsho oluncinci kumbono wabo ukuya kuthi ga kwiinyanga ezi-3-6.
Ufanele uthethe nini nogqirha?
Ukuba ufumana ezi mpawu zilandelayo, fowunela ugqirha wakho ngoko nangoko.
- Ukulahlekelwa ngumbono ngequbuliso okanye ukulahleka kombono okugqithisileyo.
- Iintlungu zamehlo ziyanda imihla ngemihla, azinyamezeleki nokuba kukho amayeza.
- Iimpawu zosulelo ziquka ukudumba kwamehlo, ukukrazuka kakhulu, kunye nokuba bomvu.
Umyalezo Wokuya Ekhaya
- I-PRK yinkqubo yotyando lwelaser ekhuselekileyo nesebenzayo enokunciphisa ukuxhomekeka kwiiglasi okanye kwiilensi zoqhagamshelwano.
- I-PRK lukhetho oluhle kakhulu kwabo bangenakwenza utyando lwe-LASIK, ingakumbi abo bane-cornea encinci okanye abo baneengxaki zamehlo awomileyo.
- Ixesha lokuchacha emva kotyando lwe-PRK lide kunelo le-LASIK, kodwa iziphumo zokugqibela ziphantse zifane kuzo zombini.
- Ukuze ufumane iziphumo ezilungileyo, kubalulekile ukulandela imiyalelo kagqirha wakho kunye namayeza akhe ngokuchanekileyo lonke ixesha emva kotyando.
- Ngaphambi kokuba wenze naziphi na izigqibo, thetha nogqirha wakho ngezinto ozilindeleyo kunye nemibuzo onokuba nayo ukuze ufumane ukuqonda okucacileyo.
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