Lapho iziguli ziveza isihloko samalensi oxhumana naye anombala, into yokuqala efika engqondweni yakho ukushintsha umbala wamehlo.Ngaphezu kwezizathu zezimonyo, amalensi okuxhumana anemibala egqamile angasiza iziguli ngezindlela eziningi, njengokunciphisa ukuxhopha noma ukushintsha umbala. ukuqonda kubantu abanobumpumputhe bombala.
Kungakhathaliseki ukuthi ukusetshenziswa kwezimonyo noma ukwelashwa, ama-lens othintana nawo anemibala ngokuvamile awawona lokho i-OD ebhekisela ezigulini.Nokho, uma kunconywa, anesithakazelo ezigulini eziningi.
umbala wamalensi oxhumana naye
Izincomo zingenziwa ngama-engeli ahlukene.Kungakhathaliseki ukuthi zilethwa kanjani, kubalulekile ukuqaphela ukuthi nakuba amalensi anombala engase azuzise iziguli, anezingozi abaningi abangazazi.Ake sibuyekeze ukuthi ama-contact lens anombala angazizuzisa kanjani iziguli ngokuphepha nangempumelelo.
Amalensi okuxhumana anombala akhiqizwe ngobuningi Amalensi okuxhumana anombala akhiqizwe ngobuningi angatholakala kuma-try-on kits futhi akhishwa kalula endaweni yasehhovisi. Ngokuvamile, lezi zithombe zikhiqizwa ngekhompuyutha.Ngakho-ke, i-OD ayikwazi ukushintsha imingcele efana nokugcwala, ukukhanya, noma ukuqondanisa umbala.
Amalensi okuxhumana anombala akhiqizwe ngobuningi angakwazi ukuthuthukisa umbala wemvelo weso lesiguli noma awushintshe ngokuphelele.Afana namalensi amaningi athambile asetshenziselwa ukulungisa amaphutha e-refractive.Ngakho-ke, asikho isikhathi sokuhlala esengeziwe esidingekayo uma kuqhathaniswa nokuthintana okucacile okukhiqizwe ngobuningi. amalensi.
Amalensi amaningi anombala akhiqizwa ngobuningi anamandla ayindilinga ashintshwa nsuku zonke noma nyanga zonke.Amalensi abiza kancane ngenxa yokukhiqiza ngobuningi, ngakho angakwazi ukwethulwa kalula ezigulini njengendlela yokugqoka yesikhathi esigcwele noma yesikhashana.
Amalensi okuxhumana anombala akhiqizwe ngobuningi avame ukuthandwa emicimbini yezenhlalo.1 Ngenxa yokusekelwa kwawo okusobala kanye nama-pigment anombala azungeze iris, avumela amaphethini ahlukahlukene angakha ukubukeka kwemvelo noma okugqamile.
Isibonelo, isiguli esinamehlo ansundu singase sikhethe ansundu noma i-hazel ukuze siguqule kancane umbala we-iris, noma oluhlaza okwesibhakabhaka noma oluhlaza ukuze sishintshe ukubukeka ngendlela ephawulekayo.Naphezu kokulula kokufaka nokufundisa iziguli mayelana nezinketho zazo, lawa ma-lens anenani eliphakeme kakhulu. amazinga ezinkinga phakathi kwabasebenzisa lens yokuxhumana.2
Izinkinga Nakuba izingozi zamalensi ezimonyo zisobala kuma-OD abone imiphumela ye-ocular, abantu abaningi ngokuvamile abajwayele usongo abalubekayo empilweni yamehlo.When Berenson et al.iphenya ulwazi lweziguli kanye nokusetshenziswa kwamalensi okuxhumana ezimonyo, imiphumela yabonisa ukuthi iziguli eziningi azizange ziqonde izingozi neziyalezo zokusetshenziswa okufanele.3,4 Ngokocwaningo, isiguli esisodwa kwezine sabika ukuthi sike sasebenzisa amalensi ezimonyo ngaphambili, futhi abaningi bathola amalensi. kusuka emithonjeni engagunyaziwe.
Lapho ebuzwa ngolwazi lwelensi yokuxhumana, imiphumela yabonisa ukuthi iziguli eziningi zazingayazi iphrothokholi efanele yokugqoka.3 Iziguli eziningi aziqapheli ukuthi akukho emthethweni ukuthengisa amalensi okuxhumana phezu kwekhawunta ngaphandle kwencwadi kadokotela ezweni lonke.Futhi ababoni lokho kuxhumana. amalensi awawona i-panacea, lezo izimuncagazi ezinganamathisela kumalensi, nokuthi amalensi “aanime” awavunyelwe yi-FDA.3
OKUPHATHELENE: Imiphumela Yokuvota: Yini Okunganeliseki Kakhulu Kwakho Nge-Contact Lens Wear?Ezigulini ezahlolwa, u-62.3% uthe awukaze ufundiswe ukuhlanza ama-contact lens.3
Nakuba singase siqaphele okunye kwalokhu okutholakele, kubalulekile ukuhlola ukuthi amalensi ezimonyo akhulisa kanjani ithuba lezehlakalo ezimbi (ama-AE) uma kuqhathaniswa namalensi okuxhumana acacile.
I-AEs Color contact lens inengozi enkulu yezenzakalo ezithathelwanayo nezivuvukalayo ngenxa yokubunjwa kwazo.Ucwaningo lwakamuva luhlole amalensi okuxhumana ahlukahlukene wezimonyo ukuze kutholakale indawo yezingulube ezingqimbeni zamalensi.5 Ithole ukuthi iningi lamalensi ahlaziywe aqukethe iningi lamalensi i-pigment engaphakathi kuka-0.4 mm endaweni.Amazwe amaningi awalawuli izinga lezindawo ezivalekile zikapende, kodwa indawo ingathinta ukuphepha nokunethezeka.5
Olunye ucwaningo luthole ukuthi iningi lemikhiqizo yelensi yokuxhumana yehlulekile uhlolo lokuhlikihla, okwenza ukuthi izingulube ezinemibala zixebuke.6 Sula ukuhlolwa Sebenzisa iswabhu kakotini ukuze usule ngobumnene izindawo ezingaphambili nezingemuva zelensi yokuxhumana imizuzwana engu-20, bese ukala inani. ukuhlukaniswa kwe-pigment.
Okuhlobene: Amalensi anesikhala se-scleral-lens esinqunyiwe se-OCT esihluleka ukuhlolwa kokuswayipha abonise ukunamathela okuphezulu kwe-Pseudomonas aeruginosa, okubangele ukwanda kwama-AE kanye nama-AE abeka engcupheni umbono.Lezi pigments zitholakale ziqukethe izakhi ezinobuthi ezicutshini zamehlo.7
Ukuba khona kwanoma iyiphi i-pigment kungabangela i-AEs.Lau et al bathole ukuthi ama-lens ane-pigments ebusweni be-lens (ngaphambili noma ngemuva) ayenezilinganiso eziphakeme kakhulu zokungqubuzana ezindaweni ezinemibala kunezindawo ezicacile.8 Ucwaningo luye lwaphetha ngokuthi amalensi ezimonyo ngemibala eveziwe inezindawo ezimbalwa ezingaguquguquki, okuholela ekushiseni nasekukhuphukeni kokuqina kwendawo.I-Lubricity kanye nama-roughness kudlala indima ebalulekile ekugcineni ukuqina kwefilimu yezinyembezi.Ngenxa yalokho, ukuphazamiseka kungaholela ekuboneni okungazinzile nokunciphisa ukunethezeka kwelensi yokuxhumana.
I-Acanthamoeba keratitis ingenzeka nazo zonke izinhlobo zamalensi okuxhumana, ingozi esixoxa ngayo nabo bonke abasha. nciphisa ama-AE ahlotshaniswa namagciwane, kodwa ucwaningo lwakamuva luthole ukuthi ukwakheka kwelensi kuthinta amathuba okuba i-Acanthamoeba inamathele kulensi.9
Okuhlobene: Nikeza I-Toric Orthokeratology Lens Iskena I-Electron Microscopy Imaging Ukusebenzisa izithombe ze-SEM, u-Lee et al.ithole ukuthi izindawo ze-achromatic zamalensi okuxhumana ezimonyo zazishelela futhi ziyisicaba kunezindawo ezinemibala.
umbala wamalensi oxhumana naye
Baphinde bathola ukuthi inani eliphezulu lama-Acanthamoeba trophozoites lalinanyathiselwe ezindaweni ezinombala omahhadlahhadla uma kuqhathaniswa nezindawo ezingenambala, ezibushelelezi.
Njengoba isidingo samalensi okuxhumana wezimonyo sikhula, lokhu kuyingozi okufanele kuxoxwe ngayo neziguli ezigqoka amalensi anombala.
Ngezinto ezintsha zamalensi, njengama-silicone hydrogel, amalensi amaningi okuxhumana akhiqizwa ngobuningi ahlinzeka ngokungena komoyampilo okwengeziwe kunalokho okudingekayo.Ukudluliselwa komoya-mpilo kukalwa ngendawo emaphakathi ye-optic yelensi, kuyilapho ukudluliswa kwe-oxygen ye-peripheral kuyinkinga.
Ucwaningo olwenziwa yi-Galas ne-Copper lwasebenzisa amalensi akhethekile enziwe ngokukhethekile ngezingulube ngokusebenzisa indawo emaphakathi ye-optical ukukala ukufinyeleleka kwe-oksijini ngemibala.10 Bathola ukuthi i-pigment ayizange ithinte ngokwezibalo ukungena kwe-oxygen, ngaleyo ndlela ibonise ukuthi ayinciphisi noma ayiguquli i-lens. ukuphepha.OKUHLOSIWE: Uchwepheshe Unikeza Izimfihlo Kokuthintana Nelensi Yokuzijwayeza Impumelelo
IZIPHETHO Naphezu kokushiyeka kwama-contact lens akhiqizwa ngobuningi, ukusetshenziswa kwawo kuye kwakhula kancane kancane.Le ndatshana ihlose ukusiza odokotela baqonde ukuthi kungani imfundo iyingxenye ebalulekile yokugqoka amalensi okuxhumana anemibala.Kungakhathaliseki ukuthi isetshenziselwa izimonyo noma ukwelashwa, ukufundisa isiguli nokuqwashisa ngengozi ukusiza ukunciphisa izehlakalo ezingezinhle futhi kuthuthukiswe ukuphepha kwamalensi othintana nawo anemibala.
Isikhathi sokuthumela: Jun-04-2022
