Ungahlola kanjani umbono?

Umbono ubaluleke kakhulu izinzwa, ngosizo lomuntu oluthola ulwazi oluningi ngezwe elizungezile, kodwa, ngokufanayo, iso linomthwalo osindayo, ikakhulukazi emhlabeni wezobuchwepheshe kanye nobuchwepheshe bekhompyutha.

Izindlela zokuhlolwa kweso

Emazweni e-CIS, indlela ejwayelekile kakhulu yokuhlola amehlo iyithebula leGolovin-Sivtsev. Ithebula elinjalo liqukethe izingxenye ezimbili, enye yazo inezinhlamvu ezinciphisa phansi, futhi indandatho yesibili iyahlukana ngezindlela ezihlukile. Kokubili lokho kanye nenye ingxenye yetafula iqukethe imigqa engu-12, lapho izindandatho nezinhlamvu zinciphisa ngobukhulu kusuka phezulu kuya phansi. Amathebula anjalo atholakala ehhovisi nanoma yiliphi i-oculist, kanye nokuvame kakhulu kuma-optics.

Umbono ovamile uyabhekwa, lapho umuntu ehlukanisa ngokuthula uhlangothi lweshumi ukusuka kude kwamamitha angu-5, noma, ngokulandelana, owokuqala ukusuka kude kwamamitha angu-50. Amatafula afakwe ohlelweni lwesimali, lapho umugqa ngamunye olandelayo uhambelana nokuthuthukisa embonweni ngu-0.1.

Ngokwehla kwezinto ezibonakalayo, kunqunywa umugqa wetafula isiguli esibonayo, noma, uma ungaphansi kwe-0.1 (hhayi ikhono lokuhlukanisa umugqa wokuqala wetafula kusuka kumamitha angu-5) usebenzisa ifomula le-Snellen:

VIS = d / D

Lapho d ibanga lapho i-teste ikwazi ukuhlukanisa umugqa wokuqala wetafula, i-D ibanga lapho libonakala khona esigulini esinama-acuity ajwayelekile (50 m).

Kanjani kahle ukuhlola umbono?

1. Ukuhlola umqondo ulandela esimweni esijwayelekile sempilo, uma amehlo engapheli. Ukuthatha imithi, izifo nokukhathala okujwayelekile kungathinta umphumela wokuhlolwa.
2. Uma uhlola ukuhlola, ithebula kufanele libheke kahle.
3. Iso ngalinye kufanele lihlolwe ngokwehlukana, livale ngesandla sesibili. Ukuvala iso lesibili akudingekile, kungathinta imiphumela.
4. Uma uhlola, udinga ukubheka phambili, ungagudli ikhanda lakho noma ugxume.

Ukuhlola amehlo ekhaya

Okokuqala, kubalulekile ukunquma ukuthi amehlo akho abhekana nokucindezeleka ngokweqile nokuthi ngabe kukhona usongo lokulahleka kombono. Ziphendule ngokwakho ebo noma cha kule mibuzo elandelayo:

1. Ingabe uzizwa ukhathele ukuphela kosuku?
2. Ingabe unesizwa "sesihlabathi" noma ukuzwa okushisayo emehlweni akho, kungabangelwa ukungcola ngengozi?
3. Ingabe amehlo aphuza?
4. Ingabe ubomvu bubonakala emehlweni?
5. Ingabe ukuthola kunzima ukugxila amehlo akho?
6. Ingabe kukhona umuzwa wombono ongenangqondo futhi ogqamile?
7. Kwenzeka ukuthi isithombe sesikhathi esifushane siqala ukuphinda kabili?
8. Ingabe uhlushwa ubuhlungu ezindaweni ezihlala kwesikhashana?

Uma uphendule yebo, emibuthanweni emithathu noma ngaphezulu, amehlo agcwele ngokweqile futhi kungenzeka ukuthi ukukhubazeka okubukwayo kuphezulu kakhulu.

Ukuze uhlole umbono kwikhompyutheni, vula ifayela le-vordian bese uthayipha izinhlamvu ezimbalwa ngokuhlelekile, u-Arial usayizi wefonti 22. Hlela isikali sekhasi ukuya ku-100%. Emibonweni evamile, umuntu kufanele ahlukanise ngokucacile izincwadi ezisuka kumamitha amahlanu. Uma lokhu kungasebenzi, udinga ukuza eduze, bese ukwandisa ibanga elingaba ngu-0.2. Ukuze uthole umphumela onembile, ukuthi umbono ubheke ngqo, futhi hhayi ekhoneni, ungaphrinta ithebula eliphelile bese ulifaka eludongeni. Futhi ukuze uhlole ukubuka kwendlu, ungasebenzisa noma iyiphi incwadi, ngesayizi wezinhlamvu ezingaba ngu-2 mm. Uma ubuciko obubonakalayo beyunithi ehambelanayo, umbhalo kufanele uhluke ngokucacile kude no-33-35 cm emehlweni.

Ukuze uhlole i-binocularity yombono ngamasentimitha ambalwa ukusuka ekhaleni, ubeke ipensela, noma enye into. Uma umbono we-binocular kuyinto evamile, zonke izinhlamvu ezitholakala emkhatsini wama-30 cm zizovelela, naphezu kokuvinjelwa.

Uma ukuhlola ekhaya kukhonjisiwe ukuthi kuncipha kokubonakala okubonakalayo, udinga ukubona i-oculist ukuze uthole ukuxilongwa okunembile nokwelashwa okunembile.