Kuyesa kwowoneka bwino

Kuyesa kwamphamvu koyerekeza kumagwiritsidwa ntchito kudziwa zilembo zazing'ono kwambiri zomwe mungawerenge pa tchati chodziwika bwino (tchati cha Snellen) kapena khadi yomwe ili pamtunda wa mamita 6. Ma chart apadera amagwiritsidwa ntchito poyesa patali kufupi ndi 20 mita (6 mita). Zithunzi zina za Snellen ndizoyang'anira makanema posonyeza makalata kapena zithunzi.

Mayesowa atha kuchitika kuofesi ya othandizira zaumoyo, kusukulu, kuntchito, kapena kwina kulikonse.

Mudzafunsidwa kuti muchotse magalasi anu kapena magalasi oyimira ndikuyimirira kapena kukhala 20 mita (6 mita) kuchokera pa tchati cha diso. Mudzakhala otseguka.

Mudzafunsidwa kuphimba diso limodzi ndi dzanja lanu, pepala, kapena kakang'ono kakang'ono mukamawerenga mokweza kwambiri zilembo zazing'ono kwambiri zomwe mungathe kuziwona pa tchati. Manambala, mizere, kapena zithunzi zimagwiritsidwa ntchito kwa anthu omwe sangathe kuwerenga, makamaka ana.

Ngati simukudziwa kalatayo, mutha kulingalira. Kuyesaku kumachitika pa diso lililonse, komanso kamodzi. Ngati zingafunike, zimabwerezedwa mukamavala magalasi kapena anzanu. Muthanso kufunsidwa kuti muwerenge makalata kapena manambala kuchokera pa khadi lomwe limakhala mainchesi 14 (masentimita 36) kumaso kwanu. Izi ziyesa masomphenya anu apafupi.

Palibe kukonzekera kwapadera komwe kuyenera kuyesedwa.

Palibe kusapeza.

Kuyesa kwamphamvu ndi gawo loyeserera kapena kuyezetsa thupi, makamaka ngati masomphenya asintha kapena vuto la masomphenya.

Kwa ana, mayeso amayesedwa kuti awonetse zovuta zamasomphenya. Mavuto owonera m'maso mwa ana aang'ono nthawi zambiri amatha kukonzedwa kapena kukonza. Mavuto osadziwika kapena osatengedwa atha kubweretsa kuwonongeka kosatha kwamasomphenya.

Palinso njira zina zowunika masomphenya mwa ana aang'ono kwambiri, kapena mwa anthu omwe sadziwa zilembo kapena manambala awo.

Kuwona bwino kumawonetsedwa ngati kachigawo kakang'ono.

• Nambala yapamwamba imatanthauza mtunda womwe mwaima kuchokera pa tchati. Izi nthawi zambiri zimakhala za 20 (6 mita).
• Nambala yapansi ikuwonetsa mtunda womwe munthu yemwe ali ndi maso abwinobwino amatha kuwerenga mzere womwewo womwe mwawerenga moyenera.

Mwachitsanzo, 20/20 imawerengedwa kuti ndiyabwino. 20/40 ikuwonetsa kuti mzere womwe mwawerenga molondola pamtunda wa 6 (6 mita) ukhoza kuwerengedwa ndi munthu yemwe ali ndi masomphenya abwinobwino kuchokera 40 mapazi (12 mita) kutali. Kunja kwa United States, mawonekedwe owoneka bwino amafotokozedwa ngati nambala ya decimal. Mwachitsanzo, 20/20 ndi 1.0, 20/40 ndi 0.5, 20/80 ndi 0.25, 20/100 ndi 0.2, ndi zina zambiri.

Ngakhale mutaphonya chilembo chimodzi kapena ziwiri pamizere yaying'ono kwambiri yomwe mungawerenge, mumawonekerabe kuti muli ndi masomphenya ofanana ndi mzerewo.

Zotsatira zosayembekezereka zitha kukhala chizindikiro choti mukusowa magalasi kapena olumikizana nawo. Kapenanso zitha kutanthauza kuti muli ndi vuto la diso lomwe limafunikira kuwunikiridwa ndi omwe akukuthandizani.

Palibe zowopsa pamayesowa.

Kuyesa kwamaso - mphamvu; Masomphenya mayeso - acuity; Mayeso a Snellen

• Diso
• Kuyesa kwowoneka bwino
• Zachilendo, kuwona patali, komanso kuwonera patali

Feder RS, Olsen TW, Prum BE Jr, ndi ena. Kuwunika konsekonse kwamaso azachipatala akuluakulu Akuwunika machitidwe oyeserera. Ophthalmology. 2016; 123 (1): 209-236. PMID: 26581558 www.ncbi.nlm.nih.gov/pubmed/26581558.

Rubin GS. Kuwona bwino komanso kusiyanitsa chidwi. Mu: Schachat AP, Sadda SVR, Hinton DR, Wilkinson CP, Wiedemann P, olemba. Retina wa Ryan. Lachisanu ndi chimodzi. Philadelphia, PA: Elsevier; 2018: mutu 13.