Masifunde kancinci ngovavanyo lweKeratometry, olulinganisa ukugoba kwamehlo.

Xa ukhe wahlolwa amehlo, mhlawumbi ukhe wambona ugqirha ejonga amehlo akho aze asebenzise izixhobo ezahlukeneyo ukuwahlola. Ngamanye amaxesha sizibuza, "Le nto ijonga ntoni kwakhona?" Olunye uvavanyo lwamehlo olubaluleke kangaka lubizwa ngokuba yiKeratometry. Namhlanje, siza kuthetha ngokuba yintoni, kutheni yenziwe, kwaye yenziwa njani.

Yintoni iKeratometry?

Ngamafutshane, i-keratometry luvavanyo olulinganisa ukugoba kwendalo kwe-cornea , inxalenye ecacileyo nengqukuva yomphambili weliso lakho. I-cornea ifana nesigqubuthelo esicacileyo phezu kwamehlo ethu. Ukugoba kwayo ngokuchanekileyo kubaluleke kakhulu ekuboneni ngokucacileyo.

Yintoni efunyanwa lolu vavanyo lwe-keratometry?

Olu vavanyo lubona ukuba unesifo esibizwa ngokuba yi-astigmatism. I-Astigmatism yimpazamo eqhelekileyo yokubona izinto ezingalunganga ebangela ukubona okufipheleyo.

Khawuthelekelele, iliso eliphilileyo lidla ngokuba lijikelezi njengebhola yebhola. Emva koko, xa ukukhanya kungena elisweni, kujolisa kwindawo enye size sibone ngokucacileyo. Kodwa iliso lomntu one-astigmatism, oko kukuthi, i-cornea, lifana nebhola yeragbi, okanye lide kancinci njengomva wecephe, okanye ligobile ngakumbi kwicala elinye. Emva koko , xa ukukhanya kungena elisweni, akujolisi kwindawo enye, kwaye umbono uba mfiliba. Olu vavanyo lwe-keratometry lulinganisa ukugoba kwe-cornea.

Lwenziwa njani olu vavanyo lwe-keratometry? Kulula kakhulu!

Olu luvavanyo olukhawulezayo nolungabuhlungu. Ingcali yakho yamehlo ingayenza eofisini yayo. Akunyanzelekanga ukuba ubekele bucala usuku okanye ixesha elithile lokwenza oko. Lungenziwa ngexesha lovavanyo lwakho lwamehlo oluqhelekileyo, okanye lungenziwa ngokwahlukeneyo ukuba ugqirha wakho ukrokrela ukuba une-astigmatism.

Kwakhona, ukuba uza kunxiba iilensi zoqhagamshelwano endaweni yeeglasi, okanye ukuba ulungiselela utyando lwe-cataract, ngokuqinisekileyo uza kuba nolu vavanyo lwe-keratometry.

Ngoku makhe sibone ukuba oku kwenziwa njani. Ugqirha usebenzisa isixhobo esibizwa ngokuba yi-keratometer . Sifana kancinci neteleskopu. Nangona kunjalo, asijongi iinkwenkwezi ezikude, kodwa sijonga amehlo akho kufutshane kakhulu. Nazi iindlela zovavanyo:

1. Uza kucelwa ukuba uhlale phantsi, kwaye i-keratometer inesixhaso sesilevi sakho kunye nendawo yokubeka ibunzi lakho . Njengoko ubeka intloko yakho kuyo, ugqirha uza kulungisa isixhobo ukuze silingane neliso lakho ngokufanelekileyo.

2. Emva koko uxelelwa ukuba ujonge ngaphakathi kwisixhobo. Kufana nokujonga ngeebhayinotyhulasi. Ngamanye amaxesha uxelelwa ukuba uvale elinye iliso elingahlolwayo.

3. Ugqirha ukuxelela ukuba yintoni engaphakathi kweso sixhobo.Bacele ukuba bajonge umfanekiso. Uhlala unezangqa ezintathu, okanye into efana nethagethi enophawu lokudibanisa kunye nophawu lokususa.

4. Emva koko, ugqirha ulawula isixhobo kancinci kancinci , ehambisa iithagethi, ezisa iimpawu ezintle kwindawo apho zichukumisana khona.

5. Nje ukuba inani lifikelelwe, ugqirha urekhoda imilinganiselo. Emva koko, ulungisa elinye iliso lesixhobo aze alivavanye elo liso ngendlela efanayo.

Cinga ngokulungisa ingqwalasela yekhamera. Ugqirha ujonge ukuqinisekisa ukuba imifanekiso ihambelana negophe le-cornea yakho.

Uyabona? Kulula kakhulu, akunjalo? Ungagqiba olu vavanyo ngemizuzu embalwa nje.

Ngaba kukho naziphi na iingxaki okanye iingozi koku?

Hayi, akukho mngcipheko. Ukukhanya okuvela kwi-keratometer kusenokukhanya kancinci xa ujonge, kodwa akuyi kuwonakalisa amehlo okanye umbono wakho.

Kodwa kukho into enye encinci. Oko kukuthi, olu vavanyo lwe-keratometry lunika uqikelelo oluqikelelweyo lwe-cornea yakho, endaweni yokulinganisa ngokuchanekileyo. Isizathu soku kukuba olu vavanyo lulinganisa i-cornea yakho, kucingelwa ukuba ingqukuva ngokugqibeleleyo, ijikelezile yonke indawo. Kodwa eneneni, amehlo omntu wonke aneenguqu ezincinci zendalo. Ke ngoko, i-cornea ayifani ncam nengqukuva.

Kodwa oko akuthethi ukuba olu vavanyo alunamsebenzi. Khawuthelekelele iglobe enemephu yehlabathi. Siyazi ukuba umphezulu woMhlaba uneentaba, iilwandle, kunye neentlobo ngeentlobo zomhlaba, ngoko ke awugudi, kwaye awungqukuvanga ncam. Kodwa iglobe sisixhobo esilungileyo sokusinceda siqonde apho sikhoyo. I-Keratometry iyafana. Nangona ingeyondlela echanekileyo yokulinganisa i-cornea, iluncedo kakhulu ekufumaneni ngokukhawuleza nangokuchanekileyo i-astigmatism yabantu abaninzi.

Ezinye iingcali zamehlo ngoku zisebenzisa i-cornea mapping (ekwaziwa ngokuba yi-corneal topography kunye ne-cornea tomography) endaweni ye-keratometry. Ezi ziphucuke ngakumbi kwaye zibonelela ngemilinganiselo echanekileyo. Ngoku ziyathandwa njengendlela yokuxilonga i-astigmatism. Ugqirha wakho unokwenza uvavanyo lwe-cornea mapping ukuqinisekisa iziphumo zovavanyo lwe-keratometry.

Ithini le nto ifundwa ngu-K? Ngaba kukho ixabiso eliqhelekileyo?

Iziphumo zovavanyo lwe-keratometry zibizwa ngokuba yi-K reading . Iingcali zamehlo zilinganisa oku ngeeyunithi ezibizwa ngokuba yi-diopters .

Ngokwesiqhelo, i-cornea ephilileyo ijika ukukhanya ngexabiso elimalunga ne-43 diopters. Ukuba i-cornea inegophe elithe tye (i-cornea ethe tye), eli xabiso liyakhula. Ukuba igophe lincinci (i-cornea ezithe tyaba), eli xabiso liyancipha.

• Ukuba i-cornea yakho ingqukuva ngokugqibeleleyo, inexabiso elifanayo le-K phezu komphezulu wayo wonke.
• Kodwa ukuba une-astigmatism, i-cornea yakho iya kubonisa amaxabiso amabini e-K . Elinye lixabiso elikwindawo egobileyo kakhulu, kwaye elinye lixabiso elikwindawo egobileyo kancinci, ethe tyaba ye-cornea. Uvavanyo lwe-keratometry lubonisa lo mahluko kwaye apho ukugoba kuphezulu kwaye kusezantsi.

Ezi zibalo ze-K zibaluleke kakhulu kugqirha ukuba abhale phantsi ukugoba kwe-cornea yakho. Ezi zilinganiso zinceda ugqirha ukuba afumanise ukuba yintoni ebangela utshintsho ekuboneni kwakho. Kwakhona, ukuba kufuneka wenze utyando lwe-cataract, olu vavanyo lwe-K lukwasetyenziselwa ukukhetha ilensi yangaphakathi kweso.

Ezi ziphumo kunye namanani zinokuba nzima kuwe ukuziqonda. Kodwa ungakhathazeki. Ugqirha wakho wamehlo okanye ugqirha wakho angakunceda uqonde amayeza akho asetyenziswa ngamehlo. Banokukunceda ukhethe iiglasi ezifanelekileyo, iilensi zokunxibelelana, okanye enye indlela yokulungisa umbono.

Sifanele siye nini kwingcali yamehlo?

Ingcali yakho yamehlo iya kukuxelela ukuba kufuneka uhlolwe amehlo kangaphi rhoqo.

Njengoko sikhula, amehlo ethu atshintsha ngokwendalo imilo, ngoko ke i-astigmatism inokutshintsha. Nangona kunjalo, utshintsho olukhulu, olukhawulezileyo kwi-astigmatism lunokuba luphawu lwenye imeko ekufuneka inyangwe ngokukhawuleza, njenge-keratoconus. Ngoko ke, ukuba ubona naluphi na utshintsho emehlweni okanye embonweni wakho - ingakumbi ukuba umbono wakho ubonakala ungaphantsi kwesiqhelo okanye ungacacanga - qiniseka ukuba ubona ingcali yamehlo ngoko nangoko.

Okokugqibela, izinto ekufuneka uzikhumbule

I-Keratometry luvavanyo oluqhelekileyo olusetyenziswa ziingcali zamehlo ukuxilonga i-astigmatism. Nangona igama lisenokuvakala liyinkimbinkimbi, uvavanyo lulula kakhulu. Okufuneka ukwenze kukujonga isixhobo esikhethekileyo uze uxelele ugqirha wakho xa iimpawu ezikuso zihambelana. Uza kusebenzisa ezo zilinganiso ukulinganisa ukugoba kwe-cornea yakho.

Khumbula, olu ayilovavanyo lokupasa okanye lokungaphumeleli. Nokuba i-astigmatism yakho inzima kangakanani na, kukho iindlela zokuyilungisa. Ugqirha wakho wamehlo uza kucebisa iindlela ezilungileyo zokucoca umbono wakho.

Ngoko ke, ungoyiki ukuba ucelwe ukuba wenze i-keratometry xa usiya kuhlolwa amehlo. Ibaluleke kakhulu kwimpilo yamehlo akho.

I - Keratometry, i-Astigmatism, i-Cornea, iziphene zokubona, uVavanyo lwamehlo, ukufunda i-K, impilo yamehlo