Table Sivtseva - wothandizira bwino mu matenda a masomphenya anthu

Anthu masomphenya - mmodzi wa lalikulu ndipo nthawi yomweyo luso wosalimba. Kumbuyo m'pofunika nthawi zonse penyani. Kukwera kwa maso akhale zodziwitsa ntchito mu moyo wa munthu aliyense.

Chongani view mu pochiza matenda a maso ano

Back mu USSR asayansi Sivtsev kupangidwa ndi chida chofunika kwambiri kwa pochiza matenda a maso ano, amene ali ulemu wolemba amatchedwa "tebulo Sivtseva". Gwiritsani ntchito njira imeneyi kuti tipeze acuity zithunzi. Pakuti zino zizindikiro 12 anafotokozedwa: makalata ndi mphete ndi kusiyana chomwe kuyambira mzere pamwamba mpaka pansi pang'onopang'ono ndichepe. Kuchokera pa mtunda wa mamita 5 zithunzi acuity anatsimikiza pamlingo kuchokera 0.1 kuti 2.0.

Kodi acuity zithunzi ndi mmene kulitsimikizira Sivtseva tebulo?

Zooneka acuity - luso la diso anthu kusiyanitsa mfundo ziwiri zimene padera pa mtunda wina. malamulo Current kuti diso ndi 100% masomphenya amatha kusiyanitsa mfundo ziwiri, spaced popanda moyandikirana okhota a miniti imodzi. Choncho, zithunzi acuity zikhoza kutha kuona bwino ndipo fotokozani ngati maso diso digito chizindikiro 100% kapena 1.0 anafotokoza. tebulo Sivtseva chabe m'njira yakuti digito chizindikiro ndi kudziwa.

Pali zinthu pamene diso anthu bwino anakamba kuti n'zotheka amati ndi sharpness wa 1.2 kapena 1.5 kapena 3,0. Pamene diso matenda osiyanasiyana, monga patali kapena patali zokha, astigmatism kapena khungu, nthenda kungakhale 0.5 kapena 0,05.

Nthawi zambiri zithunzi acuity anafotokoza ntchito chiwerengero. Komabe, tisaiwale kuti kokha 100% chithunzi limafanana 100% pamaso zithunzi. Mwachitsanzo, chizindikiro zooneka 0.2 diopters silingamasuliridwe ndi kuchuluka 20% monga zoopsa. chiwerengerochi limafanana 49% ya mwakale. Osati mophweka kumasulira kanjedza aliyense kuti chiwerengero ndi kumbuyo. Makamaka tebulo Sivtseva - miyeso mu mizati ya kumanzere ndi zabwino kale masamu Zotsatila zake.

Kodi kufufuza zithunzi acuity Sivtseva tebulo?

A miyezo ya zilembo kusindikizidwa zamitundu yosiyanasiyana anamanga mu 12 angapo. Makalata onse a zilembo Russian - W, B, M, H, K, N. Aliyense mzere m'munsi - makalata kakang'ono kuposa pamwamba. Macheke ziyenera kuperekedwa mu chipinda kuunikira bwino. Timapereka ndi nyali wapadera, umalimbana tebulo ndi kukhala kuwala koonekera. Pa mtunda wa mamita 5 kuchokera view tebulo ndi kufufuzidwa Sivtseva. Wodwala ayenera kukhala bwinobwino ndipo alternately kutseka lamanzere ndi lamanja maso, kuwerenga kalata ku gome. Ngati kufufuzidwa mosavuta kuitana makalata kwa mizere 10, dziwani kuti iye ali 100% maso. Ngati mabasi zina zakuti kumtunda, ndi acuity zithunzi anatsimikiza ndi magawo mu ndime bwino pa tebulo.

Wodwala kukhala mamita kwambiri kuposa 5 pa gome, koma mu nkhani iyi chilinganizo wapadera ntchito kudziwa kukula kwa:

V = D / D

V mu aone kuti pali ichi - kufunika kuti tiyenera kudziwa, ndicho zithunzi acuity; D - mtunda pa zimene wodwalayo pa gome; D - mtunda pa zimene mtima chimasiyanitsa nambala inayake ya m'nkhaniyi.

Tsopano, mfundo za mmene tebulo adzaikidwe Sivtseva. Izo aikidwa pakati pa nyali ziwiri fulorosenti kuti chiwalitsiro ukufika 700 lumens. M'munsi m'mphepete mwa gome akhale pa msinkhu wa masentimita 120 kuchokera pansi. Wodwala akukhala bwinobwino, atagwira mutu wake chilili, zikope za maso onse Tsegulani malo yachibadwa. M'diso atakolekedwa wapadera woyera mbale. Mkati 3 masekondi verifiable amasonyeza kalata kuti titchedwe. Pankhaniyi, kuyambira m'munsi ndi pang'onopang'ono adzauka zizindikiro zazikulu. Ngati zizindikiro zonse amatchedwa - kuti kufufuzidwa 100% kapena 1.0 masomphenya. Ngati otchulidwa chimodzi kapena zingapo sikukuyamikiridwa - chosakwanira zithunzi acuity. Kudziwa zithunzi acuity zosakwana 0,1 mtima pang'onopang'ono wodyera lililonse 0.5 m, pamene izo sizingakhoze kudziwa tebulo mbale.

Bakuman kuti Table Sivtseva

Kuwonjezera pa zilembo Russian Tingaone kuti pali magawo awiri omwe anasankhidwa ndi makalata Latin D ndi V. The manambala mu D-ndime amasonyeza mtunda kukhala pa tebulo limene munthu amene zithunzi acuity ndi wofanana 100%, zikhoza kuwerenga kuchokera kumanzere ataima chizindikiro. Manambala mu V-ndime - ndi n'zosangalatsa kumva khalidwe acuity, ngati nambala iyi ndi kuwerenga ndi kufufuzidwa pa mamita 5 mtunda.

matebulo zimene ena ntchito pochiza matenda a maso?

Popeza masomphenya ndi zofunika kwambiri kuti munthu ukhale bwino, pali mayesero ntchito pochiza matenda a maso amene amalora ife kusonyeza chithunzi chenicheni cha boma la diso.

• Chongani zithunzi acuity - Sivtseva tebulo (monga amatchedwa ena amanena) analengedwa kwa cholinga ichi. Lidalembedwa kalata W, D, F, H, K, N. Orlova kugwiritsa ntchito tebulo ana, kumene makalata ntchito m'malo zithunzi (a asterisk, bowa, kavalo, ndi ketulo, ndege, bakha, njovu, makina, herringbone).
• tisiyanitse masomphenya mayeso - kwa tebulo Golovin analengedwa. Limagwiritsa ntchito mitundu 4 optotypes - mphete ndi yopuma imodzi mwa mbali 4
• Chongani myopia ndi hyperopia - ntchito duohromny mayeso tichipeza amachepetsa awiri a maziko a mitundu yosiyanasiyana: ofiira ndi obiriwira, ndi maziko awa, anakonza makalata (A, H, W, F, Ine, B, S). The chifukwa cha yesero, kuti akufunitsitsa ngati maso yachibadwa (diso akuona zilembo zikhalidwe zonse zofanana). Ngati makalata pa maziko wofiira mzere umodzi bwino kuposa pa wobiriwira, pali myopia M'malo mwake - sightedness.
• Yang'anani astigmatism - mayeso ambiri amatchedwa Siemens Star. Akamanena za mayeso ndi munthu ndi masomphenya yachibadwa amaona m'mizere ili m'munsiyi kuti, asanafike pakati, anayamba kutchinga kuti tisaone ndipo alipo wina ndi mnzake. Pakati pa mzere anakhala kuoneka bwino.