Indlela Yokufunda Imithetho Yakho Ye-Eyeglass
Uma ubuke ubheke ngokucophelela isimiso sakho somuthi we-eyeglass, cishe uye wazibuza ukuthi ungayenza kanjani yonke leyo namba nezinhlamvu. Ukuze kuhunyushwe emhlabeni jikelele, imiyalelo ye-eyeglass ibhalwe ngendlela efomethiwe ngendlela ejwayelekile. Nakhu ukubheka isampula ye-eyeglass yesampula kanye nokuhamba-ndlela ukuthi ungayifunda kanjani:
Isibonelo:
I-OD: -2.00 - 0.50 x 180
I-OS: +1.00 i-DS
Yengeza: +1.75 noma
Isifundo ngesiLatini
Omunye kumele aqale athathe isifundo esincane ngesiLatini ukuze enze umqondo wesiguli sesilinda. Izifinyezo zesiLatini zivame ukusetshenziswa ekunakekelweni kwezempilo ukubhala imiyalelo yezokwelapha kanye nemigomo yeglasi. Lezi zifinyezo ziba ngaphansi kakhulu ngoba imithetho kanye nemithethonqubo yesifundazwe iqala ukunciphisa ukuthembela kubo.
Izinhlamvu ze- OD zimelela i- "oculus dexter" futhi zibonisa iso elungile. Izinhlamvu ze- OS zimelela "oculus sinister" futhi zibonise iso lesobunxele. Izinhlamvu noma zimelela "oculi uterque" futhi zibhekisela kokubili amehlo.
Izinombolo, Izinombolo, Izinombolo
Imigomo ye-Eyeglass inezinombolo - eziningi kanye nezinamba eziningi. Esikhathini sethu esingenhla, inombolo yokuqala kuya kwesokudla se-OD yi--2.00. Lokhu kubhekwa njengengxenye ethi "sphere" ingxenye yemithi kadokotela. Inomboro ye-sphere ibonisa ukuthi ingasondela noma ibukeka kahle . Ngokuvamile, isignali esincane (-) ibonisa i-lens engenawo amandla esetshenziswa ukulungisa ukusondela.
Isibonakaliso esihle (+) sibonisa i-lens enamandla enikwe amandla ukulungisa ukubhekwa phambili.
Inombolo elandelayo esitokisini semithi yesampula ye-eye is -0.50. Le nombolo imelela ingxenye "ye-cylinder" ingxenye yemithi kadokotela. Enye igama le-cylinder i- astigmatism futhi limelela umehluko ekuvaleni kanye namandla phakathi kwamaphoyinti amabili iso, ehlukaniswe ngama-90 degrees.
Inombolo elandelayo ngu-180, ufunde ngokuthi "i-axis 180." Le nombolo ibonisa i-angle emadigri ukusuka ku-0 kuya ku-180, emele indawo ye-meridian enhle kakhulu emehlweni e-astigmatism uma ibhalwe phansi kwefomu le-cylinder, njengalesi sibonelo ngenhla.
Ngeso lesobunxele, uzobona ukuthi inombolo "ye-sphere" iyinhlanganisela eyodwa (+1.00) DS. Izinhlamvu DS zibhekisela ku " diopters sphere" futhi zibonisa ukuthi ukulungiswa kwamehlo kwesokunxele kunemvelo ngokuphelele ngaphandle kwama-astigmatism. Ngamanye amazwi, i-cornea ye-right kwesokudla kungenzeka inomumo obongela kancane, futhi ukuma kwe-cornea kwesokunxele kusondele kakhulu ukuba kube nxazonke. Kuvamile ukubhala i- SPHERE noma i-DS njengomnikazi wendawo endaweni ye- astigmatism ukuze uqinisekise ukuthi umfundi we-odokotela uyazi ukuthi udokotela akazange akhohlwe ngokucophelela ukurekhoda ukulungiswa kwe-cylinder noma i-astigmatism.
Okokugcina, inombolo ye-ADD ye-+1.75 imelela amandla okudinga "ukungezwa" emkhawulweni wokugudluza ukuze unikeze isiguli ukuthi senze umbono ocacile ebangeni elikude lemisebenzi yokufunda neyeduzane. Le nombolo ngokuvamile ayikho emibhalweni yezinsizwa zabantu abancane. Ngenkathi abanye abantu abasha bengasondela ekugxileni izinkinga futhi badinga amandla okuthi "engeza", ngokuvamile kubonisa ukuthi isiguli sidinga amandla ahlangene njengoba eqala ukukhulula amandla akhe okugxila (inkinga evame ukuqala njengoba sifinyelela emashumini ethu. )
Abantu abaningi bakholelwa ngephutha ukuthi u-+1.75 yimandla adingekayo uma uthenga amilazi wokufunda ngaphezulu . Kodwa-ke, kufanele wenze i-algebra encane ukuze uthole amandla okuphelele okudingekayo ukuze uthole izibuko zokufunda ezilodwa. Esikhathini esingenhla, yi--2.00 +1.75 = -0.25. Ngakho isimiso sokufunda izibuko zeso elungile kungaba -0.25 - 0.50 x 180. Ngeso lesobunxele, ukubalwa kuyinto +1.75 +1.00 = +2.75 DS
Qaphela ukuthi iningi labantu linemiyalelo ngokungafani nesibonelo esiboniswe ngenhla futhi ngokuvamile sinamanani afana namandla kokubili amehlo. Lesi sibonelo sikhethiwe ukukhombisa umehluko phakathi kwemigomo esibhekene naso futhi ebheka phambili futhi ukuthi lezi zinombolo zithinta kanjani izibalo ngokuvamile ezenziwa ochwepheshe bama-optic, optometrists kanye nama-ophthalmologists .
Izifinyezo eziningi
Lokhu okulandelayo kukhona ezinye izifinyezo ezimbalwa ongase uzihlangabezane nazo emgqeni wakho wokugqoka i-eyeglass:
- I-SVD - Umbono Ongabonanga Umkhawulo, noma izibuko ezikude kuphela
- I-SVN - Umbono Owodwa Obuseduze, noma izibuko zokufunda kuphela
- I-Sphere - Amandla aphephile anegunya elifanayo kuwo wonke ama-meridians
- I-Cylinder - I-cylinder yamandla ilungisa i-astigmatism futhi imelela umehluko emandleni amakhulu kunawo wonke nome amandla angenamandla ebusweni, ngokuvamile ahlukaniswe ngama-90 degrees.
- I-Axis - ibonisa i-angeli (ngamadigri) phakathi kwama-meridians amabili esweni se-astigmatic
- I-PD - (ibanga elingama-pupillary, noma ibanga eliphakathi kwezikhungo zabafundi ababili phakathi kwamehlo) Lokhu kulinganiswa kubalulekile ekwakheni izibuko ezikhululekile ukugqoka futhi ziphelele.
- I-Prism - I-Prism ayidlwanga ngokujwayelekile. Ngokuvamile kunqunyelwe ukukhipha isithombe ngesinye isiqondiso ezibhekene neziguli ezine-eye- strabismus noma enye imisipha yamehlo noma ukugxila kwezifo.
Njengoba ungabona, ukufunda i-eyeglass yakho kadokotela kungayidida. Kodwa-ke, ngokufunda kancane nokuzijwayeza, uzokwazi ukufunda isimiso sakho somuthi we-eyeglass njengeprothi uma unesidingo.
Umthombo:
Eskridge, J. Boyd, uJohn Amos noJimmy D. Bartlett. "Izinqubo Zomtholampilo E-Optometry." I-Copyright 1991 yi-JB Lippincott Company, Isahluko 18 - "Ukuchithwa Okumangalisayo KwamaMonicular" ngo-Polasky Michael, iphepha 174-188.