Diopter - ... kuba isici esibalulekile empilweni iso

Ukuthuthukiswa okusheshayo of ezobuchwepheshe, lokunqoba okuyinto waphawula emhlabeni wonke, okuholela yokuthi bonke abantu abasebenza ngezinto, esemgwaqweni sisondelene kakhulu nabo, singasho, cishe ngaphansi ekhaleni lakhe. Kodwa ngaphambi umkhathizwe mlisa kungagcini kuphela sky blue phezu kwekhanda lakhe, futhi emgqeni umkhathizwe. Lokhu kuchaza zokugula we izinhlaka umbono, ekusebenzeni esiqhutshwa imodi engavamile ngabo. Phela, kungakhathaliseki ukuthi kukhompyutha yakho, ithebhulethi, noma ngisho incwadi - amehlo akhe egxile into eduze futhi ekugcineni ukujwayela ukusebenza in ezahlukene ezinjalo amabanga. Ngenxa yalokho, ngisho nakanye nje bangase badinge ukulungiswa nge yokukhanya, njengoba kunjalo ngokuvamile ezisetshenziswa contact lens noma izibuko usebe.

Izimiso kwi Ukusetshenziswa yokukhanya

Kuyinto la izesekeli ube oyifunayo amandla yezokubona, okuyinto kusiza ukunqophisa imisebe ekusakazeni ukukhanya phakathi iphuzu elifiswayo fundus. Ngenxa yalezi izindlela kokulungisa iyunithi namandla nesilinganiso kukhona diopters. Lokhu value okungukuthi, ngokomzimba okushiwo okuyinto ukuthi, kusukela empambana lens convex zonke emisebeni yelanga esivezwa endaweni eyodwa, isikhundla okuyinto kunqunywa ukufuduka yezokubona Inkomba medium ibanga ethize.

Izimiso ze-isakhiwo kanye nokusebenza amehlo umama angenisa ukukhanya sika

izindlela zemvelo zikhona umbono imizimba yabantu ukuthi labo abazokwazi ukuhlinzeka komugqa vibration zemvelo ingilazi (lens) ukutsheka okubonakalayo. Lezi zinguquko ngobukhulu abe namanani amancane (ngokuvamisile akukho kuka 1/50 noma 1/75 imitha), kodwa ngoba unikeza amandla adingekayo nokucacisa optical yesithombe. Ngempela, kuye imizamo namandla indices of kwalungiswa izinkunga zokubona lens akuyona ezingaphezu kuka 60-71 diopters (lesi silinganiso okuzisholo, ukuphambuka kusuka osuvele ukubizwa ngokuthi izifo). Umgomo we operation yomzimba optic wukuthi ngenxa yezinguquko amandla optical abezindaba iso refracting, imaging kwenzeka kuyi-retina kanye fundus. Uma ikhamera ray izogxila, okudingayo, ke umuntu ngeke uthole isithombe esicacile ngoba isikhala esitholakalayo awulona ngokwanele ukuba bamakhele. Lokhu ukuphambuka libizwa hyperopia futhi adluliselwa esizibonayo kulindeleke ungene retina isivele ngemuva imingcele. Okuphambene icala - myopia, kule sifo, konke kwenzeka abasebenzela, kanye kumiswa isithombe kakhulu ekuseni ngenxa - i focus ekuseni nesithombe esilufifi kwezinye izinto ezikude.

Kukhethwa okuyiwa ukulungiswa

Ukuze kuncishiswe umthwalo ezibukwayo, umuntu kumelwe uxhumane kudokotela wezifo zamehlo. Lokhu Uchwepheshe oyophatha izifundo ezidingekayo futhi ihlaziya, futhi enze wokuhlola kokuqala yeso. amathebula okubalulekile kuyokwenziwa kuchazwe: yini isimo diopter umbono ngaleyo ndlela kungaba "plus" futhi ku "lokususa". Ngokusekelwe kulezi nemingcele, uchwepheshe Uyonquma yezindlela ezisikiselwe zokuvimbela noma inhlanganisela yabo elashwe olunzulu, okuyinto sizogxila nokuvimbela izinguquko ezingenakuhlehliswa esweni. Ezimweni elula, zonke izinto zingase zishintshe ngokuphelele. Udokotela ukulungiswa elinganiselwe, ngiphakamisa lemali elihambisana kwamandla optical - diopter izibuko. Kuyokunikeza isiguli? izinyathelo zokuqapha kuzosiza alondoloze impilo yakhe, futhi ngokuzimela ukulawula ukuqhubeka kwesifo. Ngemva diopter - kuba inkomba eyinhloko izinqubo elimazayo, okuyinto engcono kakhulu wazibona futhi silawulwe kuka ukuze abanikeze inkululeko ephelele.

Vision ngaphandle kwemingcele

Uma kwenziwe izinqubo zokwelapha futhi uthole iziguli kudingeka lens inqanyulwe indiva kugula bakwazi ukujabulela ukungaboni egcwele. Nokho, uma kwezinso esweni ezincane (hhayi ningi than ± 1 iyunithi amandla optical), ngisho nalezi zinyathelo kungase kube ngaphambi kwesikhathi. Njengoba ezimweni ezinjalo izinhlaka umbono ngeke saphawula ukukhathala diopter ngokweqile - akulona panacea. Ngemva kokulondoloza ithoni iso kubalulekile ukuba afeze olunzulu, ngokungagcini nje ngokubashumayeza, izindlela optical.