Uthola nokuthi uma ufunda iphephandaba noma ubheka ifoni yakho, izinhlamvu azicacile? Noma awuboni yini izinto ezikude, njengophawu lwebhasi noma izinhlamvu ku-TV, ngokucacile? Mhlawumbe uma ushayela imoto ebusuku, ukukhanya okuvela ezibanini zemoto kubonakala kusakazeke yonke indawo? Iningi lethu lihlangabezana nezinto ezinjalo ekuphileni kwethu. Isixazululo esilula nesivame kakhulu salokhu ukusebenzisa izibuko.
Kalula nje, izibuko zamehlo zingamalensi amabili asohlakeni asetshenziselwa ukukusiza ukuthi ubone kahle. Zilungisa izinkinga zokubona emehlweni akho. Zingenye yemishini yezokwelapha esetshenziswa kakhulu emhlabeni namuhla.
Kungani sidinga izibuko? Izinhlobo eziyinhloko zezinkinga zokubona
Izibuko zamehlo zilungisa izimo ezibizwa ngokuthi amaphutha okubheka ukukhanya. Okungukuthi, ukungakwazi ukugxila imisebe yokukhanya engena esweni ngendlela efanele. Ake sibheke ukuthi yiziphi lezi zinhlobo zamaphutha eziyinhloko.
| Igama lokukhubazeka kokubona | Kalula nje... |
|---|---|
| Ukubona Okuseduze/I-Myopia | Ungabona izinto eziseduze nawe (incwadi, ifoni) ngokucacile, kodwa izinto ezikude (uphawu lwebhasi, i-TV) azicacile. |
| Ukubona kude/i-Hyperopia | Izinto ezikude zingabonakala ngokucacile, kodwa uma ubheka izinto eziseduze (njengokufunda iphephandaba), amehlo azizwa ekhathele futhi engacacile. |
| I-Astigmatism | Lokhu kungabangela ukuthi ukubona okuseduze nokukude kufiphale. Esinye isibonakaliso ukubonakala kwemigqa ezungeze izibani, ikakhulukazi ebusuku. |
| I-Presbyopia | Lesi yisimo semvelo esenzeka njengoba sikhula (ngokuvamile ngemva kweminyaka engu-40). Ikhono lamehlo lokugxila eduze kwezinto liyancipha. Yingakho abantu abaningi bedinga izibuko ezihlukene ukuze bafunde amaphephandaba. |
Uyithuthukisa kanjani indlela obona ngayo ngalezi zibuko?
Cabanga ngeso lethu njengekhamera. Ukukhanya okuvela ngaphandle kumele kudlule ku-cornea kanye nelensi engaphambili kweso futhi kugxile ngqo ku-retina engemuva kweso. Kulapho kuphela lapho singabona khona ngokucacile.
Okwenzekayo kumuntu onenkinga yokubona ukuthi lokhu kukhanya akugxilile ngqo ku-retina. Amalensi asezibukweni agoba imisebe yokukhanya engena esweni ngezinga elidingekayo futhi ayenze iwele ngqo ku-retina. Ukuze kube sobala, asiza iso ukuthi lenze lokho elingenakukwenza lodwa.
Abanye abantu bangase babone izinto ezimbili ngesikhathi esisodwa (ukubona kabili) ngenxa yomehluko omncane endaweni yamehlo abo. Lesi simo singalungiswa futhi ngokusebenzisa amalensi akhethekile.
Yiziphi izinhlobo eziyinhloko zezibuko?
Kunezinhlobo ezahlukene zamalensi afanela inkinga yakho yokubona. Udokotela wakho uzoncoma uhlobo oludingayo.
| Uhlobo lwelensi | Kuzokwenzekani kulokhu? |
|---|---|
| Amalensi anombono owodwa | Le lensi inamandla elilodwa kuphela. Kungaba okokubona ibanga noma okokubona eduze. |
| Amalensi amaningi | Lezi ziqukethe amandla amaningana kulensi efanayo. Zingabona kokubili eduze nakude. |
| Ama-Bifocal | Lolu uhlobo lwe-multifocal. Ilensi inamandla amabili. Ngokuvamile ibukeka njengomugqa ophakathi kwelensi. Ungabona kude ngengxenye ephezulu kanye nengxenye eseduze (isib. ukufunda) ngengxenye engezansi. |
| Ama-Trifocal | Kunamandla amathathu kulokhu. Ungabona ibanga elikude, eliphakathi nendawo (isib. isikrini sekhompyutha), kanye neliseduze. Nalapha futhi, imigqa ehlukanisa amandla iyabonakala. |
| Amalensi aqhubekayo | Lokhu kufana ne-bifocal, kodwa ayikho imigqa ebonakalayo efana naleyo. Amandla ashintsha kancane kancane kusukela phezulu kuya phansi kwelensi. Kubukeka njengezibuko ezivamile. |
| Izibuko zokufunda | Lezi zenzelwe ukubona eduze kuphela. Zisiza abantu abane-presbyopia ukufunda amaphephandaba nezincwadi. |
Izibuko zezinhloso ezikhethekile
- Izibuko Zelanga: Uma kufanele uhlale ugqoka izibuko, ungathola izibuko zelanga ezinikezwa udokotela. Lokhu kuzovikela amehlo akho elangeni kuyilapho kukuvumela ukuthi ubone kahle.
- Izibuko ezivimba ukukhanya okuluhlaza okwesibhakabhaka: Lezi zingaba usizo kulabo abachitha isikhathi esiningi bebuka izikrini zekhompyutha noma zefoni. Zisiza ekunciphiseni ukucindezeleka kwamehlo ngokuhlunga ukukhanya okuluhlaza okwesibhakabhaka esikrinini.
- Amalensi e-Photochromic: Lawa yilokho esikubiza ngokuthi “izibuko zezimoto.” Lawa afana namalensi ajwayelekile acacile ngaphakathi endlini, kodwa uma evezwa imisebe ye-UV, aba mnyama ngokuzenzakalelayo abe yizibuko zelanga.
Kuthatha isikhathi esingakanani ukujwayela izibuko ezintsha?
Ngokuvamile kuthatha izinsuku ezimbalwa ukujwayela izibuko zakho ezintsha. Kodwa ngezinye izikhathi, ikakhulukazi ngamalensi aqhubekayo, kungathatha isonto noma amabili ukuzijwayela. Kuvamile ukuba nekhanda elincane kanye nokucindezeleka kwamehlo ezinsukwini ezimbalwa zokuqala. Kodwa uma lokhu kungakhululeki kuqhubeka, khuluma nodokotela wakho futhi.
Ngezinye izikhathi uhlaka lwesibuko lunganamathela phezulu kwekhala lakho nangemuva kwezindlebe zakho, okubangela ukungakhululeki. Uma lokho kwenzeka, ungaya endaweni lapho uthenge khona isibuko bese usilungisa.
Ngizinakekela kanjani izibuko zami?
Uma uzinakekela kahle izibuko zakho, zingahlala isikhathi eside.
- Yigcine iphephile: Uma ingasetshenziswa, yigcine ebhokisini eliqinile elifakiwe. Lokhu kuzoyivikela ekuweni nasekuklwebhekeni.
- Hlanza kahle: Mane usule ngendwangu ye-microfiber emanziswe ngamanzi amancane anensipho noma isifutho esenzelwe le njongo.
- Ungenzi lezi zinto: Ungalokothi usule izibuko zakho ngekhona lehembe lakho, iphepha lethishu, noma iphepha langasese. Imicu ekuzo ingaklwebha ilensi futhi yonakalise uqweqwe.
Kufanele ngimbone nini udokotela?
Kubalulekile ukuthi wonke umuntu ahlolwe amehlo okungenani kanye ngonyaka noma emibili. Udokotela wakho uzokutshela ukuthi kufanele ubuye kangaki.
Ngaphezu kwalokho, uma ubona noma yiziphi izinguquko embonweni wakho, noma uma uhlangabezana nezimpawu ezilandelayo, bona udokotela ngokushesha.
- Ukukhathala okukhulu kwamehlo
- Ubuhlungu bekhanda obuvamile
- Ubuhlungu bamehlo
- Ubunzima bokubheka ukukhanya
Umlayezo Wokuya Nawe Ekhaya
- Ngisho noma ubona ushintsho oluncane embonweni wakho, ungalushayi indiva. Funa iseluleko sezokwelapha ngokushesha.
- Izibuko zisetshenziselwa ukulungisa izinkinga zokubona, hhayi ukwelapha lesi sifo. Ngakho-ke, kubalulekile ukuqhubeka nokuzisebenzisa.
- Kunezinhlobo ezahlukene zamalensi ezifanela izidingo zakho. Khuluma nodokotela wakho ukuze ukhethe uhlobo olufanele wena.
- Ukuhlolwa kwamehlo oku-inthanethi noma izinhlelo zokusebenza akuzona izinto ezithatha indawo yokuhlolwa kwamehlo okuphelele ngudokotela. Njalo bona udokotela ofanelekayo.
- Ungandisa isikhathi sokuphila kwesibuko sakho ngokusihlanza kahle nokusigcina ngokuphephile.
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