Hyperopia - ukuthi i-plus noma lokususa? Izimbangela hyperopia. ezikude yobudala

Sivame ukuzwa imibuzo abantu lutho mayelana hyperopia - kuba plus noma lokususa. Ukuze kahle siphendule le mibuzo, kubalulekile ukuqonda isimiso zazishintsha zaba nemizimba indoda futhi ukuhlola izinkinga ezingase ziphakame.

Eye - lokhu ingenye izitho eyinkimbinkimbi kunazo emzimbeni womuntu. Ukuxhumana kohlelo ebonwayo cortex cerebral ikuvumela ukuguqula imisebe yokukhanya okuvela emhlabeni zangaphandle ku ebukwayo. Ukuze uqonde ukuthi lokhu kwenzeka kanjani, kudingeka sicabangele ukuthi kukhonani ehlweni lomuntu.

Isakhiwo iso

Ilihlo lenzelwe esiyinkimbinkimbi kakhulu uhlelo optical ukuthi inezingxenye eziningi.

1. Cornea. Ngalo mhlatshelo, amaza okukhanya faka iso. Limelela i lens organic ngawo ukugxila izinhlangothi etshiyeneyo we amasignali ukukhanya.
2. Sclera - yangaphandle emgodleni iso opaque, okungasekelwe bahileleke ekufezeni ukukhanya.
3. Iris - okuthile okunjengesizwe beso ikhamera. Le ngxenye ulawula ukugeleza izinhlayiya ukukhanya futhi yenza umsebenzi ngenxa yobuhle, ekutholeni umbala ehlweni lomuntu.
4. Kuboshwe umfundi - imbobo iris olawula inani imisebe yokukhanya ngokufaka iso, futhi ikhipha out Curves kokuguqula imisebe.
5. Lens - yesibili amandla lens emzimbeni womuntu, elise ngokushesha ngemuva iris. Kuye ibanga into eshintsha amandla ako-optical. Ngezinye ibanga elincane ke kwandisa wonkana - buthakathaka.
6. Retina - ebusweni eyindilinga, okuyinto slide emhlabeni ngaphandle. Ngaphezu kwalokho, ukukhanya edabula lens amabili collective, ewela retina efomini nabokhulumile. Ulwazi-ke ibe amaza electronic.
7. Macula - ngumgogodla retina, lapho ibona umbala isithombe esicacile.
8. Optic nerve - elihambayo kusetshenzwe kuyi-retina nezinzwa amaza kagesi sibe ulwazi ebuchosheni.

Izinhlobo zezinkinga umbono

izinkinga Vision singenzeka ngasiphi yobudala ngokuphelele (kungenzeka ngisho kokuzalwa). Imbangela ezinye zazo - ukuhlukumeza retina noma optic umsebenzi nerve. Nokho, iningi ezibukwayo uhlelo izifo sokucasuka ukwephulwa izici yezokubona esweni. Umphumela is defocusing, kanye Umuntu ulahlekelwa ikhono lokubona izinto ngokucacile. Ophazamisekile umbono womuntu. "Plus" futhi "lokususa" kuleli cala ubheke degree of kwalungiswa izinkunga zokubona yokukhanya (noma imisebe akwanele kuthiwa refracted noma refracted njengoba kakhulu). Kunezinhlobo eziningana eziyisisekelo ongaboni kubantu.

Myopia - lena yinto yesikhashana okwesa-

Ngo umuntu abone izinto eziseduze akaboni izinto kude. Eduze zamehlo evamile. Kulesi isifo, ungakwazi kalula wafunda incwadi, kodwa inombolo yendlu, esemgwaqweni ngaphesheya komgwaqo, siyasibona kakade.

-Okwesa- Far - a "plus" noma "lokususa"?

Ase sibuyele emuva yombuzo main. Ngakho, kuze kube-okwesa- - a "plus" noma "lokususa"? Ezikude (hyperopia kuba) - kungcono angaboni kahle, lapho umuntu kubi ukuhlukanisa izinto aseduze, kodwa ukuhlukanisa kahle imininingwane esihle kwezinye izinto ezikude.

Ngakho, amaphuzu amandla, kadokotela isiguli ulinganiswa diopters. Nge hyperopia ukubeka ingilazi nge nomphumela lokuqoqa, okuyinto enze ingxenye imisebenzi lens. Lezi amafasitela abizwa ngokuthi omuhle, futhi kuze kube manje-okwesa- - a "plus." Noma "omubi" isibonelo, isetshenziswa elifushane okwesa-. Ngakho-ke, ukwelapha ingilazi esetshenziswa ne umphumela kusakazeka obiziwe ezimbi.

Presbyopia - Kuyini?

Ezikude ubudala endaweni yezokwelapha libizwa presbyopia, futhi iningi ezitholakala abantu abaneminyaka engaphezu kuka-40. Lesi sifo obangelwe ukungamethembi umuntu kuyaqina lens futhi uwukubonakaliswa ekulahlekelweni kwamandla ukuze uguqule ukugxila lapho ukuhunyushwa iso ukubheka izinto sise amabanga ahlukahlukene.

astigmatism

Blurred umbono isici nge astigmatism kuphakama ngenxa yezinguquko ugobile lens futhi sivezwe kula kwalungiswa izinkunga zokubona efanele imisebe yokukhanya. It is kancane uhlanekezelwe ngenxa lesi sithombe nezwe elingaphandle.

Iyini imbangela cataract?

A cataract yisifo esivame kakhulu, okuyinto luhambisana nomthwalo ongaboni. Ngokuvamile kwenzeka engu abadala, kodwa futhi ungaba umphumela isifo ezibangelwa amagciwane. Ukubonakaliswa yalesi sifo singumbulali ingaphazamisi lens.

I ukuphakamisa kulesi sihloko okufanele icatshangelwe omagazini imininingwane ezihlobene ngayo ezikude kuphela.

Ziyini izimbangela eziyinhloko zalokhu of hyperopia

Ngakho, njengoba kuboniswe kakade, ezikude - kuyinto isifo samehlo lapho isithombe igxile ngemuva retina. Ukuthuthukiswa hyperopia iso kuncike ikhono refract ukukhanya imisebe futhi kusukela yokuhlala (izakhiwo lens ukushintsha ukwakheka kwalo kuye ngokuthi ibanga ukuba into):

1. Engaqinile (ukuze +2 diopters).
2. Isilinganiso (kusuka diopters +2 kuya +5).
3. A strong (ephakeme kunaleyo +5 diopters).

Kunezizathu ezimbili hyperopia:

1. Too inhlamvu yeso esifushane, futhi ngenxa yalokho, emifushane-eksisi longitudinal kweso. Ngokuvamile, lesi sifo umbono sitholwa njengefa.
2. izakhiwo ezinganele yezokubona kohlelo ezibukwayo. Njengoba bekhula, lens crystalline ilahlekelwa umswakama waso kanye nekhono elifanele.

Kukhona amathuba inhlanganisela yalezi zizathu ezimbili.

Izimpawu ze-hyperopia

Uphawu oyinhloko uwukwenza awaboni kahle uhla close. Kulokhu, izinto kude, isiguli ubona kahle. Nokho, ngokuhamba kwesikhathi zokugula kungase ukugqanyiswa ngenxa ukulahlekelwa accommodative lens izakhiwo.

Izimpawu main, khona okuholela uthintane uchwepheshe iso nge hyperopia okusolakala, zihlanganisa:

1. Ukwephula "eduze" buka.
2. Ukwephula umbono "kude".
3. Ukwandiswa iso ukukhathala ngenkathi usebenza.
4. Visual ukukhathala lapho ufunda.
5. conjunctivitis njalo nezinye iso izinqubo ukuvuvukala.
6. Strabismus ezinganeni.

Ukuhlonza Ukugula izinkinga zamehlo

Njengoba nje unomuzwa ukwehla acuity ezibukwayo, kudingeka ucele usizo lochwepheshe. nenqubo ethile yokuthola isifo esivamile kuhilela izinyathelo ezilandelayo:

1. ukunemba cwaningo. Ngenxa yale njongo, itafula umbono ekhethekile. Manje asetshenziswa Sivtseva ithebula Golovin noma Orlova (ikakhulukazi ezinganeni).
2. Ukuphenywa the fundus ngokusebenzisa esibukweni, kanye ultrasound.

3. Ukukhethwa lens amandla ibanjwe phoropter.

ekwelapheni hyperopia

izinkinga umbono Ukuze wenze awukaze ukhathazwa, kufanele aqondiswe izimiso ezilandelayo:

1. Bagcine imodi ukukhanyisa.
2. Enye ngokomzimba ezibukwayo umthwalo ukudedela.
3. Abaqeqesha imisipha ezibukwayo indlela yokusebenzisa umzimba esikhethekile amehlo, futhi nokusetshenziswa ubuchwepheshe yesimanje (kufaka nekhompyutha kanye laser).
4. ekuhlonzweni nasekwelashweni lesifanele umbono ukulungiswa (kuhlanganisa saziso gqwa ukuhlolwa ophthalmologist).
5. Yenza umzimba okubuyisela, elisekelwa ilungelo-ezingondlekile.

Ukuqaliswa kwalawa izinyathelo zokuvimbela lizovikela umbono. Plus, yebo, ungakhohlwa kudlule Luhlolo ezikhathini ezithile nge kudokotela wezifo zamehlo.

Vision ukulungiswa wenziwa ngosizo iso izibuko noma ama-contact lens, okuyinto ekhishwe esigulini iresiphi ekhethekile, ngemuva kophenyo egcwele.

Ngaphezu kwalokho, ukuhlinzwa uya yathuthuka phambili futhi manje ivumela umuntu ayeke ezibuza ngalokho ukuthi, ezikude - a "plus" noma "lokususa".