Nrig txog kev pom teeb - ua thiab kev tiv thaiv

Qhov teeb meem ntawm nrig txog kev pom kev tsis taus yog tshwj xeeb yog mob hnub no. Nyob rau hauv thawj chav kawm ntawv, txhua txhua plaub tus me nyuam muaj teeb meem tsis pom, lub thib rau lub chav kawm ntawv - twb yog ib nyob rau hauv peb, thiab kawm tiav - txhua txhua ob. Cia peb kawm seb yog cov feem ntau pom tau qhov sib puas nyob rau hauv cov me nyuam, dab tsi yog qhov vim li cas thiab yuav ua li cas rau kev tiv thaiv.

Nrig txog kev pom teeb tshwm sim thaum twg, txawm yog vim li cas, lub qhov muag loses nws muaj peev xwm txaus refraction (refraction ntawm lub teeb), thiab muaj ib tug pib pom tej yam distorted. Nyob rau hauv no, pom tias ib tug xov tooj ntawm theem pib hom ntawm tus kab mob.

myopia

Nyob rau hauv lub xeev no ntawm phab tsuas yog khoom uas yog cia nyob rau ntawm lub caj npab lub ntev. Ib tug ntxiv yam khoom ntawm zoo-xam tau tias yog tsis yooj yim sua, zim zuag, muaj tsis muaj tseeb txoj kev.

Ceev ceev nyob rau hauv cov neeg mob uas myopia yog feem ntau ntev tshaj li 5-6 millimeters, dua li nyob rau hauv cov neeg noj qab. Tus kab mob no tshwm sim vim ntev thiab tsis tu ncua qhov muag lim. Yog hais tias tus me nyuam yog ib yam nkaus thiab feem ntau tsom saib zoo spaced khoom, lub qhov muag nqaij twg thiaj li raug siv thiab spazmiruyutsya nyob rau hauv lub xeev no. Muaj peev xwm mus saib qhov sib txawv deb li cas los tsim kho tej yam uas ntau npaum li cas lawm.

Muaj ntau ntau degrees ntawm cov kab mob:

- Me myopia: mus txog - 3 diopters;

- High myopia: mus txog -6 diopters;

- Loj myopia: ntau tshaj 6 diopters.

Heev kom meej meej twb tsis siv ib tug kev tshuaj ntsuam genetic predisposition mus myopia. Qhov no yog vim lub metabolism thiab rhiab heev ntawm lub ocular nqaij, uas yog kis tau los ntawm tiam mus rau tiam.

Nrog myopia tsom iav hnav kom zoo saib nyob deb khoom nyob rau hauv txoj kev thiab lub me lus nyob rau hauv lub chav tsev. Thaum nyeem ntawv los yog sau ntawv tsom iav yuav tsum tau muab tshem tawm.

hyperopia

Nws yog ib tug mob opposite ntawm myopia. Nyob rau hauv farsightedness, lub closer tus kwv, qhov ntau qhov muag plooj lub ntaem. Raws li, nyob deb npaum khoom yog pom kom meej meej. Thiab nrog ib tug loj degree ntawm farsightedness, yog kom meej meej pom tsuas khoom rau ib yam nrug.

Nyob rau hauv no kab mob, lub lens yog hloov kom lub refracted teeb yog tsis txaus, thiab tus tsom xam yog tsim sab nraum ntawm lub retina.

Hyperopia yog muab faib ua ob peb theem raws li luv luv-sightedness.

Yog vim li cas rau nws tshwm sim - caj, ntawm overvoltage, nquag mob, thiab muaj hnub nyoog txog kev hloov nyob rau hauv lub ceev ceev.

Thaum farsightedness tsom iav hnav rau kev nyeem ntawv thiab kev sau ntawv, thiab nyob rau hauv lwm tus neeg mob lawv yuav tsis xav tau, yog hais tias tus neeg kawm ntawv uas tus kab mob no yog tsis heev loj.

astigmatism

Cov nrig txog kev pom teeb voznkayut thaum distorted kheej kheej zoo ntawm lub cornea. Ces nws ua txawv radii, uas yog vim li cas lub teeb yog refracted ntawm ces kaum sib txawv. Thaum astigmatism yog cai ob myopia thiab hyperopia thiab ib txwm tsis pom kev. Nyob rau tib lub sij hawm tus neeg mob pom ntau yam nkhaus ntawm cov khoom nyob rau tib lub sij hawm.

Paub qhov txawv corneal thiab lenticular astigmatism - nyob ntawm seb dab tsi yog ib feem ntawm lub qhov muag yog deformed.

Rau cov me nyuam khaws cov tshwj xeeb tsom-iav thiab lo ntsiab muag, uas yog ua noj mus rau hauv tus account nws ib tug neeg ces astigmatism.

Feem ntau cov feem ntau tus kab mob no yog txuam nrog raws roj ntsha thiab congenital qauv ntawm lub qhov muag.

Kev tiv thaiv ntawm nrig txog kev pom kev tsis taus nyob rau hauv cov me nyuam.

Tiv thaiv kom txhob siv qhov muag puas yog tsis yooj yim. Ua li no, koj yuav tsum ua raws li tej kev cai thiab kev kawm.

- pib ib tug zoo xws li cov kev tiv thaiv yuav ua tau tseem nyob rau hauv lub menyuam txaj. Ua li no, dai lub rattle ntawm ntsuab, daj txiv kab ntxwv thiab xim ntawm 30 cm los ntawm tus me nyuam ob lub qhov muag. Nws kuj pab tau tsav qho khoom ua si los ze zog thiab ntxiv deb ntawm tus me nyuam, nws thiaj li kawm ob lub qhov muag teem nyob txawv mus.

- TV thiab computer tshaj plaws tsis pub tshaj. Raws li cov kev cai, me nyuam yuav tau siv nyob rau hauv nws tsis muaj ntau tshaj li 40 feeb ib hnub twg, ib tug junior high school tus menyuam kawm ntawv - tsis ntau tshaj li ib teev, thiab cov me nyuam 10 xyoo - txog li ib thiab ib nrab teev. Nyob rau hauv cov ntaub ntawv no, txhua txhua 20 feeb yog tsim nyog los ua kom me me so rau nrig txog kev pom ce.

- tus me nyuam yuav tsum taug kev nraum zoov ib nrab rau ob teev ib hnub twg rau muab lub cev nrog rau txaus oxygen.

- Nco ntsoov tias tus me nyuam tau txais tag nrho cov tsim nyog vitamins thiab minerals noj qab haus huv. Mus saib cov, nyob rau hauv particular, qhov tseem ceeb cov vitamins A thiab C.

- Ua koj tus kheej thiab qhia nej tus me nyuam mus rau ib tug yooj yim pom tau qhov sib xwb, yog li lawv yuav so kom txaus lub qhov muag thiab ntxiv dag zog rau lub qhov muag nqaij.