I-Presbyopia

I-Presbyopia yisimo lapho ilensi yeso ilahlekelwa khona amandla okugxila. Lokhu kwenza kube nzima ukubona izinto eduze.

Ilensi yeso idinga ukushintsha isimo ukuze igxile ezintweni eziseduze. Ikhono lelensi lokushintsha isimo kungenxa yokuqina kwelensi. Lokhu kunwebeka kwehla kancane njengoba abantu bekhula. Umphumela uba ukulahleka kancane ekhonweni leso ukugxila ezintweni eziseduze.

Abantu bavame ukuqala ukuqaphela lesi simo lapho beneminyaka yobudala engama-45, lapho bebona ukuthi badinga ukubamba kude izinto zokufunda ukuze bagxile kuzo. I-Presbyopia iyingxenye yemvelo yenqubo yokuguga futhi ithinta wonke umuntu.

Izimpawu zifaka:

• Ukwehla kwekhono lokugxila lezinto eziseduze
• Isibuko samehlo
• Ubuhlungu bekhanda

Umhlinzeki wezokunakekelwa kwempilo uzokwenza ukuhlolwa kwamehlo okujwayelekile. Lokhu kuzobandakanya izilinganiso zokunquma incwadi kadokotela yezingilazi noma amalensi wokuxhumana.

Ukuhlolwa kungafaka:

• Ukuhlolwa kwe-retina
• Ukuhlolwa kwemisipha yobuqotho
• Ukuhlolwa kwe-Refraction
• Isivivinyo sesibani
• Ubukhali obubukwayo

Alikho ikhambi le-presbyopia. Ku-presbyopia yokuqala, ungathola ukuthi ukubamba izinto zokufunda kude noma ukusebenzisa ukuphrinta okukhudlwana noma ukukhanya okungaphezulu kokufunda kunganele. Njengoba i-presbyopia iya iba yimbi, uzodinga izingilazi noma amalensi wokuxhumana ukuze ufunde. Kwezinye izimo, ukwengeza ama-bifocals emthonjeni okhona welensi yisixazululo esihle kunazo zonke. Izibuko zokufunda noma umuthi we-bifocal uzodinga ukuqiniswa njengoba ukhula futhi ulahlekelwa amandla amaningi okugxila eduze.

Lapho uneminyaka engama-65, ukuqina kwelensi okuningi kuyalahleka ukuze umuthi wezibuko zokufunda ungaqhubeki uqina.

Abantu abangazidingi izibuko zokubona ibanga bangahle badinge kuphela izingilazi ezihhafu noma izibuko zokufunda.

Abantu ababonela eduze bangakwazi ukukhumula izibuko zabo zebanga ukuze bafunde.

Ngokusetshenziswa kwamalensi wokuxhumana, abanye abantu bakhetha ukulungisa iso elilodwa ngokubona okuseduze nelinye iso ukubona kude. Lokhu kubizwa ngokuthi "monovision." Le ndlela iqeda isidingo sama-bifocals noma izibuko zokufunda, kepha ingathinta ukuqonda okujulile.

Kwesinye isikhathi, i-monovision ingakhiqizwa ngokulungiswa kombono we-laser. Kukhona namalensi wokuxhumana angahlukanisi angawalungisa womabili umbono oseduze nowakude emehlweni womabili.

Izinqubo ezintsha zokuhlinza ziyahlolwa ezinganikeza nezixazululo kubantu abangafuni ukugqoka izibuko noma oxhumana nabo. Izinqubo ezimbili ezithembisayo zifaka ukufaka i-lens noma ulwelwesi lwephini ku-cornea. Lokhu kaningi kungaguqulwa, uma kunesidingo.

Kunezigaba ezimbili ezintsha zamaconsi entuthuko ezingakwazi ukusiza abantu abane-presbyopia.

• Uhlobo olulodwa lwenza umfundi abe mncane, okwandisa ukujula kokugxila, okufana nekhamera yephini. Inkinga yalawa maconsi ukuthi izinto zibonakala zifiphele kancane. Futhi, amaconsi ayaphela ngokuhamba kosuku, futhi ungaba nesikhathi esinzima ukubona lapho usuka ekukhanyeni okukhanyayo uye ebumnyameni.
• Olunye uhlobo lwamaconsi lusebenza ngokuthambisa ilensi yemvelo, eba bucayi ku-presbyopia. Lokhu kuvumela ilensi ukuthi iguqule ukwakheka njengoba kwenzeka ngenkathi usemncane. Imiphumela yesikhathi eside yalawa mathonsi ayaziwa.

Abantu abahlinzwa i-cataract bangakhetha ukuba nohlobo olukhethekile lokufakwa kwamalensi okubavumela ukuthi babone kahle kude nakude.

Umbono ungalungiswa ngezibuko noma ngamalensi oxhumana nawo.

Ubunzima bokubona obuya buba bumbi ngokuhamba kwesikhathi futhi abungalungiswa kungadala izinkinga ngokushayela, indlela yokuphila, noma umsebenzi.

Shayela umhlinzeki wakho noma i-ophthalmologist uma unenkinga yamehlo noma unenkinga yokugxila ezintweni eziseduze.

Akukho ukuvimbela okuqinisekisiwe kwe-presbyopia.

• I-Presbyopia

Crouch ER, Crouch ER, Isibonelelo TR. I-Ophthalmology. Ku: Rakel RE, Rakel DP, ama-eds. Incwadi Yezokwelapha Yomndeni. Umhlaka 9. IPhiladelphia, PA: Elsevier Saunders; 2016: isahluko 17.

UDonahue SP, uLongmuir RA. I-Presbyopia nokulahleka kwendawo yokuhlala. Ku: Yanoff M, Duker JS, ama-eds. I-Ophthalmology. Umhlaka 5. IPhiladelphia, PA: Elsevier; 2019: isahluko 9.21.

UFragoso VV, Alio JL. Ukulungiswa kokuhlinzwa kwe-presbyopia. Ku: Yanoff M, Duker JS, ama-eds. I-Ophthalmology. Umhlaka 5. IPhiladelphia, PA: Elsevier; 2019: isahluko 3.10.

Reilly CD, Waring GO. Ukwenza izinqumo ekuhlinzeni okubuyisa. Ku: Mannis MJ, Holland EJ, ama-eds. I-Cornea. Umhla wesi-4. IPhiladelphia, PA: Elsevier; I-2017: isahluko 161.