Diopter - ... kuba ngumba obalulekileyo yempilo amehlo

Uphuhliso okukhawulezileyo kobugcisa yedijithali, lo kumngcelele woloyiso leyo yathi kulo lonke ihlabathi, oko kukhokelele kwinto yokuba bonke abantu abasebenza kunye izinto, nto leyo usondele kakhulu kubo, sinokuthi, phantse phantsi impumlo yakhe. Kodwa ngaphambi kokuba esifaneleyo yomntu ayiphelelanga isibhakabhaka kuphela blue ngaphezu kwentloko yakhe, yaye umgca ngomqukumbelo le. Oku kuchaza ngezifo of amalungu yombono, ukusebenza ibanjwa kwi imo engaqhelekanga kubo. Ngapha koko, nokuba ikhompyutha, tablet, okanye incwadi - amehlo akhe ingqalelo into kufutshane yaye ekugqibeleni ukukuqhela ukusebenza kuluhlu enjalo ngokwemigama. Ngenxa yoko, hayi kanye ke kusenokufuneka ukulungiswa kunye ngokukhanya, njengoko ezininzi eziqhele ukusetyenziswa lenses okanye izipeksi undi.

Imigaqo phezu Use ngokukhanya

Kuyinto la izincedisi kuba amandla zokunganyangeki ezinqwenelekayo, nto leyo inceda kukugxininisa imisebe njengesihlambo lukhanyiso, ndifikile neencopho kwi fundus. Ukuze ezi ndlela ulungisa unit and neSingqinisiso lwamandla diopters. Eli xabiso, ngokomzimba intsingiselo yazo kukuba, ekubeni ekudibaneni kwe lens khaxa yonke radiation elanga okuqikelelweyo kwindawo enye, indawo apho bubonwa ukubana zokunganyangeki Isalathisi eliphakathi ukuya kumgama othile.

Imithetho-siseko ye-isakhiwo nokusebenza amehlo unina bukhanye ngayo

zendalo ezisegumbini izidumbu zabantu nabakwaziyo yokunikezela yomgama lokungcangcazela khulu yendalo (isekelwe) of axis yayo ebonakalayo. Ezi nguqu ngobukhulu namanani amancinci (njenge akukho ngaphezulu kwe 1/50 okanye 1/75 zemitha), kodwa ke ngenxa yokuba inika amandla eziyimfuneko kunye nokucaca enombala lo mfanekiso. Eneneni, kuxhomekeka imigudu kunye namandla indices ze refraction lens ayikho ngaphezulu kwe 60-71 diopters (eli xabiso ngegama, ukuphambuka kuyo sele kuwo izifo). Umgaqo ukusebenza komzimba optic kukuba ngenxa yeenguqu ngamandla woqondo yamajelo eendaba iliso refracting, umfanekiso kwenzeka kwi retina kunye fundus. Ukuba camera ray liya kujolisa, oko kufuneka, ngoko ke umntu akayi kufumana umfanekiso ocacileyo kuba isithuba olukhoyo nje ngokwaneleyo ukwakha kuyo. Oku kuphambuka kuthiwa ezikude kwaye wadlulisela inkcazelo olubonakalayo kuthelekelelwe kwi retina sele emva imida. Ityala esahlukileyo - ukubona, kule sifo, yonke into eyenzekayo malunga enye indlela, kwaye ukuyilwa umfanekiso kusekwangoko kakhulu ngenxa - ezinengqwalasela kwangethuba kunye nomfanekiso eluziziz izinto ezikude.

Ukukhethwa esebenzisa kulungiswa

Ukunciphisa umthwalo ezibonwayo, umntu kufuneka udibane zamehlo. Le specialist iza kuqhuba izifundo eziyimfuneko aze ahlalutye, kwaye enze uhlolo lokuqala lweliso lakho. iitafile ezizodwa ziya kuchazwa: Yiyiphi imeko le diopter mbono oko banokuba kwi 'dibanisa' kunye 'thabatha'. Ngokusekelwe kwezi parameters, ingcali liya kwenza isigqibo ngeyona ndlela zothintelo acetyiswayo okanye indibanisela yabo unyango olumandla, neya kugxininisa ekuthinteleni utshintsho ayibuyiseki umva emehlweni. Kwiimeko ezilula, yonke into ingaba nomahluko ngokupheleleyo. Ugqirha ulungiso olungephi, ukuchola isixa ohambelana amandla woqondo - diopter for iindondo. Luza kunika umguli? amanyathelo okhuseleko kuya kunceda ukugcina impilo yakhe, yaye ngokuzimeleyo ukulawula ukuqhubela phambili kwesifo. Emva diopter - yiyo sisalathisi engundoqo ye iinkqubo etshabalalisayo, nto leyo ibonwa kakuhle kwaye silawulwe kunokuba ukunika kubo inkululeko epheleleyo.

Umbono inesiphelo

Xa wenziwe iinkqubo zonyango kwaye ufumane izigulane eziyimfuneko lensi layekwa ngoyaba isigulo kwaye akwazi ukuba axhamle ukungaboni ngokupheleleyo. Noko ke, ukuba izinto ezingaqhelekanga emehlweni encinane (akukho ngaphezulu kwe ± 1 ngeyunithi yombane optical), nokuba la manyathelo bungqineke kwexesha. Ukusukela kwiimeko ezinjalo amalungu yombono akayi babonwe lidiniwe diopter ngokugqithiseleyo - akukho ilikhubalo. Emva zokonga ithowuni iliso kubalulekile ukwenza ebanzi, hayi kuphela iindlela ezamehlo.