Izinkampani eziningi, kufaka phakathi eziningana kuwebhu, zikhangise izibuko ze-pinhole. Lezi zinkampani zivame ukwenza izimangalo ezithinta izinzuzo zabo. Kungenzeka ukuthi ufunde ukuthi izibuko ze-pinhole zicacile umbono ngokunciphisa amaphutha okuphika nokuthuthukisa umbono unomphela. Kodwa-ke, abukho ubufakazi obukhona bokusekela ngokugcwele lezi zimangalo.
Yini Eyi-Glasshole?
Izibuko ze-pinhole, ezibizwa nangokuthi izibuko ze-stenope, ziyizibuko zama-lens ezinama-hole amaningi amancane ezigcwalisa i-opaque sheet yepulasitiki.
Lezi "pinholes" zivimbela imilayezo engacacile ekungeneni kweso, ngaleyo ndlela iwavimbela ukuba ahlanekeze umbono wakho. Nakuba lokhu kungakhulumi ukuthuthukisa ikhono lokugcizelela iso, linciphisa ubukhulu bomjikelezo obomvu ngemuva kwe- retina , ngakho-ke umbono ocacile ungafinyelelwa.
Indlela Abasebenza ngayo
Sonke siye sabhekana nalesi simo ngokugubha amehlo ethu ukuze sithuthukise umbono. Isiqephu sithola into efanayo. Iyanciphisa ubukhulu bezintaba zokukhanya ezikhanyisiwe ezise-retina. Ungenza into efanayo ngokwenza umjikelezo omncane ngesithupha sakho nokukhomba kwakho bese ubheka kuwo. Yiqiniso, labo bethu abangenazo izinkinga zombono ezibalulekile ngeke babone umehluko omkhulu. Kodwa-ke, abantu abagqoka amalalisi okulungisa bazobona ngcono, ngezinye izikhathi ukuthuthukiswa okukhulu.
Uma uzama ngezingilazi ze-pinhole, ungabona ngempela ukuthuthukiswa embonweni wakho.
Kodwa-ke, ngenkathi ugqoke izibuko zepinene, umbono uvimbela kakhulu izikhala ezimnyama ezungeze izinsipho. Kubukeka sengathi kukhona ukuhweba ekucaciseni kombono uma kuqhathaniswa nokukhanya kwemali okuvunyelwe. Uma wenza izimbobo zingencane kakhulu, umbono uzoba ngcono, kodwa inani lokukhanya livinjelwe kakhulu kangangokuthi izinga lombono liyingozi.
Izinzuzo
Izibuko ze-pinhole zisetshenziswa kakhulu ochwepheshe bokunakekelwa kweso njengethuluzi lokuxilonga. Odokotela abaningi bezilanga basebenzisa insimbi, isitsha esetshenziselwa ukumboza enye yamehlo akho ngenkathi ufunda ishadi leso. Ngolunye uhlangothi, umlingo uqinile. Ngakolunye uhlangothi, umonakalo unamakholi amaningi amancane.
Ngezinye izikhathi odokotela basebenzisa lokhu ukuze babone ngokushesha ukuthi kungenzeka yini umbono wakho. Isibonelo, uma umuntu engena ukuvakasha ihhovisi ngenxa yokutheleleka kweso futhi angafunda kuphela ubukhulu bezinhlamvu ezingu-20/70 eshadini leso, udokotela uzozibuza, "Ingabe umbono walo muntu 20/70 ngenxa yesifo , noma ingabe ingxenye yalokho inganciphisa umbono ngenxa yokubekwe eceleni? "Ukuthola ngokushesha uma umbono wesiguli ungase ubone kangcono kunama-20/70, udokotela angenza" i-pinhole "yokuhlolwa kwe-acuity. Uma isiguli sibukeka i-pinholes futhi ifunda ngo-20/25, ngakho-ke kungacatshangwa ukuthi iningi lombono owehlisiwe awukona ngenxa yokutheleleka, kodwa kunalokho uhlobo oluthile lwengqondo engabonakali. Kungase kuphephe ukucabanga ukuthi ukutheleleka kunganciphisa umbono kuphela kancane.
Udokotela angase angabi nesikhathi sokuthola ukuthi yiluhlobo luni lwesiguli isiguli esingasidinga, ngoba umuntu angase angene kuphela ukuze aphethwe yisifo.
Ngakho-ke, ukuhlolwa kwe-pinhole kuyindlela esheshayo yokuthola ulwazi oluthe xaxa mayelana nesimo somuntu. Izibuko zepinini zisetshenziswe ngezinye izindlela zokuhlola ukuhlanekezela kwamakhomikhali kanye ne-cataracts.
Ubani Ongasebenzisa I-Pinhole Glasses
Kwabaningi bethu, izibuko ze-pinhole azivumelekile emphakathini ukuba zigqoke emphakathini futhi zingasebenzi ngendlela efanele yokugqoka imisebenzi yansuku zonke. Kodwa-ke, abanye abantu baye bathi bathanda ukuba bagqoke i-bifocal noma i-trifocal. Izibuko ze-Pinhole ayithengi futhi zinikeza umbono ocacile kuwo wonke amabanga, kanti i-bifocal ingase ibe nokulinganiselwa kwamanye amabanga.
Abantu abanemithi ephakeme kakhulu futhi baphule noma balahlekelwa izibuko zabo bangase bafune ukugcina izibuko zomgcobo nxazonke.
Ngenkathi bengenzi kahle, bazobe benempilo ngokwanele ngezinhloso eziphuthumayo. Iziguli ezine-aniridia nazo zingase zithole izibuko ze-pinhole. I-Aniridia ichaza ukungabi khona okuphelele noma okuyingxenye ye-iris. Iris yenza ukulawula inani lokukhanya elivunyelwe ukungena iso. Lapho iris engekho, isiguli singase sibhekane nokuphazamiseka okubucayi nokubukeka lapho izibuko ezivamile noma izibuko zelanga zingasiza. Izibuko ze-pinhole zizokhawulela inani lokukhanya elizofika futhi ziveza umbono ocacile kakhulu.
Iningi labantu lingabe lisaba ukugqoka izibuko zokugcoba, njengoba zingekho imfashini. Futhi, kufanele kuqashelwe ukuthi izibuko ze-pinhole zinciphisa ukukhanya kuphela kodwa futhi zinciphisa umbono we-peripheral, ngakho-ke zingaphephe ukugqoka ngenkathi ushayela noma usebenza ngemishini. Cishe zonke izimo, ezinye izinhlobo zokulungiswa zizothola umbono ocacile.
> Umthombo:
> Optometrists Association Australia. Imibukiso ye-Pinhole. I-Copyright 2008