I-Monovision yigama elinikezwe ubuciko nesayensi yama-contact lens afanelekayo esigulini esithuthukise i- presbyopia. I-Presbyopia inguquko engenakugwenywa embonweni evame ukuvela cishe eminyakeni engama-40 ubudala, okwenza kube nzima ukufunda nokubhala okuncane futhi ugxile ezintweni eziseduze. Iningi labantu lijwayele ukufunda izibuko, ama- bifocals noma ama-lens okuqhubekayo njengendlela yokulungisa i-presbyopia .
Nokho, kancane kancane ajwayelekile, umbono ulungisa indlela "ye-monovision." Nge-monovision, iso elilodwa lilingana ne-lens ibanga (uma lidingeka) kanti elinye ilanga lihambisana ne-lens eliseduzane, linikeza umbono ocacile kokubili umbono webanga nokuseduze.
I-Monovision isebenza kanjani?
Ekuboneni kokuqala, i-monovision ibonakala ingavamile. Kodwa engavamile njengoba kubonakala, abantu abaningi bathola imiphumela emangalisayo. Nakhu ukuthi kusebenza kanjani:
Sonke sinaso iso elibusayo kanye neliso elingelona elibusayo. ( Ungasheshe uthathe isinqumo sokubheka ngeso lesisindo sokuhlola esisheshayo .) Uma sibheka ibanga, empeleni sisisebenzisa umbono kusuka kweso elibusayo kunokuba sisebenzise iso elingabonakali. Iso elingelona elibusayo lisebenza, kepha uhlobo oluyinhloko lamehlo ludlula. Ubuchopho bethu bukhokhisa kakhulu ulwazi olubukwayo olutholakala esweni elibusayo. Ngakho-ke uma iso elingaqondanga lihambelana ne-lens elisondelene kakhulu ukulungisa umbono wethu oseduzane, umbono wethu wokude ngeke uphazamiseke lokho okuningi.
Ngakho-ke, i-Monovision ihlanganisa ukugqoka i- lens yocingo ongeyena obusayo ukulungisa eduze kombono, kanye ne-lens yokuxhumana ehlokweni eliphakeme (uma lidingeka) ukulungisa umbono wesibanga.
I-Monovision isebenza ngoba ubuchopho bukhohliswa ekucabangeni ukuthi i- lens yokuxhumana empeleni iyingxenye yeso lendalo. (Ngenxa yalesi sizathu, i-monovision ayisebenzi emgodini we-eyelasslass iningi lethu.) Nakuba kuthatha isonto noma 2 ukuvumelanisa ne-monovision, itshaya ukufinyeleleka ekufuneni izibuko njalo lapho ufuna ukufunda.
I-Computer Monovision
Ngomshini we-computer, umuntu uzokwazi ukubona kude nesikrini sekhompyutha. Abantu abaningi abasebenza kwikhompyutha nsuku zonke bajabulela lolu hlobo lokulungiswa, nakuba ukufunda izibuko kungase kudingeke. I-computer monovision ngokuvamile ayinconywa kubantu abathanda ukwenza okuningi ukufunda.
I-Monovision eguquliwe
Loluhlobo lwe-monovision lunegulane lugqoke i-lens eyodwa yokuxhumana ehambisana ne-iso elibuthakathaka. Le lensi isetshenziselwa ukubuka izinto eziseduze. Umbono wokujula nokubuka ibanga kutholakala ngokugqoka i-single-vision contact lens kwesinye iso.
I-Monovision LASIK
Iziguli eziye zajabulela i-monovision nama-contact lens azokwazi ukujabulela izinzuzo ze-monovision LASIK. I-Monovision LASIK ihlose ukufeza umbono oqondisiwe ofanayo owuthola kumalensi wokuxhumana we-monovision , ngaphandle kwama-lens oxhumana nabo emehlweni akho. Ku-monovision LASIK , iso elilodwa lilungiswa ibanga futhi elinye liseduze. Ukuhlinzeka nge-LASIK kwenziwa ngqo kwi-cornea. Ukubuyiswa nokuphulukiswa kuvame ukushesha. Izinguquko embonweni zivame ukuphawula ngokushesha. Uma ucabanga ukuthi ungathanda ukuzama i-monovision LASIK, kungumqondo omuhle ukuqala uqiniseke ukuthi ukhululekile ugqoke amalensi oxhumana naye we-monovision.
Ukwelashwa ukuzibophezela okukhulu kanye nemiphumela kunzima ukuguqula.
Izwi elivela
Nakuba i-monovision ingasebenzi kuwo wonke umuntu, kuyindlela enhle kubantu abaye bacindezela. I-Monovision ingakusiza ukuba ufinyelele umbono omuhle, osebenzayo kude nakude. Akuwona "umbono ophelele", kodwa. Ngokuvamile kuvumelanisa phakathi kokucacile kude noma eduze ukuvumela iziguli ukuba zivumelanise ngokugcwele ne-monovision ngenkathi ngesikhathi esifanayo inikeza umbono olungele ukulungiswa. Ngenxa yalokho, iziguli ezidinga umbono obaluleke kunazo zonke ekude noma eduze zingase zingabi yizikhethelo ezinhle kakhulu ze-monovision.
Eqinisweni, abantu abangakaze bagqoke izibuko ngokuvamile abakwenzi kahle nge-monovision uma kuqhathaniswa nabantu abanezibuko ezigqoke ngaphambili. Ngaphezu kwalokho, i-monovision inganciphisa ukuqonda okujulile , okungathinta ukusebenza kwezemidlalo noma ukusebenza. Indlela engcono kakhulu yokuthola ukuthi i-monovision ingase ikusebenzele yini ukubuza udokotela wakho we-eye. Uma i-monovision ingakulungile, udokotela wakho wezilanga angase akhombise amalensi okuthintana ama-bifocal (multifocal), noma mane nje uthintane nama-lensi ebangeni nokufunda izibuko ukugqoka ngaphezu kwama-lens akho oxhumana nawo.
Umthombo: I-American Optometric Association, i-Monovision. 3 Novemba 2007.