Indlela yokufunda iMigqaliselo ye-Eyeglass
Ukuba uye wakha wakhangela ngokugqithiseleyo umyalelo wakho weglasi, mhlawumbi uzibuza ukuba ungayenza njani ingqiqo yazo zonke ezo manani kunye neempawu. Ukuze uguqulelwe emhlabeni jikelele, imimiselo ye-eyeglass ibhaliwe kwifom ehambelana neenkcukacha eziqhelekileyo. Nanku ukukhangela kwisampula ye-eyeglass nemithi yokuhamba ngendlela yokuyifunda:
Umzekelo:
OD: -2.00 - 0.50 x 180
OS: +1.00 I-DS
Yongeza: +1.75 okanye
Isifundo kwisiLatini
Omnye kufuneka aqale athathe isifundo esithile kwisiLatini ukuze enze ingqiqo yemigangatho yeglasi. Izifinyezo zesiLatini zisoloko zisetyenziselwa ukunakekelwa kwempilo ukubhala imiyalelo yonyango kunye nemiyalelo yeglasi. Ezi zifinyezo ziba ngaphantsi nangaphezulu kuba imithetho nemimiselo yomgaqo-nkqubo iqala ukunciphisa ukuxhomekeka kwabo.
Iileta ze- OD zimelela "oculus dexter" kwaye zibonise iliso lasekunene. Iileta ze- OS zimela "oculus sinister" kwaye zibonise iliso lesobunxele. Iileta ze- O zimelela "i-oculi uterque" kwaye zibhekiselele kuzo zombini amehlo.
Amanani, iinombolo, iinombolo
Imiyalelo ye-Eyeglass iqulethe iinombolo - ezininzi kunye namanani amaninzi. Umzekelo wethu ngasentla, inombolo yokuqala ukuya ngasekunene ye-OD ngu--2.00. Oku kuqwalaselwa "inxalenye" yecawa. Inombolo yecandelo ibonisa ukungqali okanye ukujonga . Ngokuqhelekileyo, uphawu lwesigxina (-) lubonisa i-lens negative-power enabled usetyenziso ukulungisa ukujonga kwangaphambili.
Uphawu olulungileyo (+) lubonisa i-lens ene-positive-power used to correct the surface.
Inombolo elandelayo kwisampula ye-eyeglass isisombululo -0.50. Le nombolo ibonisa "isilinda" inxalenye yomyalelo. Elinye igama le-cylinder lifana ne- astigmatism kwaye limela ummeli ekukhawuleni kunye namandla phakathi kwamacandelo amabini kwiso, ahlukaniswe ngama-90 degrees.
Inombolo elandelayo x 180, funda njenge "axis 180." Le nombolo ibonisa i-angle kwi-degrees ukusuka kwi-0 ukuya kwe-180, emele indawo yeyona meridiya enhle kwiso eline-astigmatism xa ibhalwa kwifom ye-cylinder ifom, njengomzekelo ongentla.
Kwilihlo lasekhohlo, uya kuphawula ukuba inombolo "yombutho" ihlanganisa enye (+1.00) DS. Iileta zeDS zibhekisela kwi " diopters sphere" kwaye zibonisa ukuba ukulungiswa kwamehlo okwesobunxele kunobungakanani bendalo ngaphandle kwe-astigmatism. Ngamanye amazwi, i-cornea yamehlo ekunene mhlawumbi inomfanekiso obunzima obunobumba, kwaye ukuma kwe-cornea kwesimo sekusondele kakhulu ukujikeleza. Kuqhelekile ukubhala i- SPHERE okanye i-DS njengomnini wendawo kwindawo ye- astigmatism ukuqinisekisa ukuba umfundi we-odokotela uyazi ukuba ugqirha akazange akhohlwe ngokukodwa ukurekhoda i-cylinder okanye i-astigmatism yokulungiswa.
Ekugqibeleni, i-ADD yenombolo ye-+1.75 ibonisa amandla adinga ukuba "wongezwe" kumgama omde wokunika isigulane imbonakalo ecacileyo kwibanga elifutshane ekufundeni nasekufutshane nemisebenzi yendawo. Le nombolo ayidla ngokungekho kwimimiselo yezilwanyana zamancinane. Nangona abanye abatsha banokuthi bahlakulele ukujongwa kweengxaki kwaye bafuna "ukungeza" amandla, ngokuqhelekileyo kubonisa ukuba isigulane sidinga amandla aqokelelekayo njengoko eqala ukukhulula amandla akhe okujolisa ekujoliswe kuyo (ingxaki eqala ukuphuhlisa njengoko sifinyelela kwiminyaka yethu. ) U
Abantu abaninzi bakholelwa ngokuphosakeleyo ukuba +1.75 yimbane efunekayo xa kuthengwa iziglasi zokufunda ngaphezulu . Nangona kunjalo, kufuneka wenze i-algebra encinane ukuba ufumane amandla amaninzi afanelekileyo okufundwa kwamaglasi eemboni. Kumzekelo ongentla, ngu -2.00 +1.75 = -0.25. Ngoko umyalelo wokufunda iiglasi kwisiliso sokunene kuya kuba -0.25 - 0.50 x 180. Kwilihlo lasekhohlo, ukubalwa ngu +1.75 +1.00 = +2.75 DS
Qaphela ukuba abaninzi abantu banemimiselo engafaniyo nomzekelo oboniswe ngasentla kwaye banamanani amaninzi afana namandla kumabini. Lo mzekelo ukhethwa ukuba ubonise umehluko phakathi kwemimiselo engabonakaliyo kunye neyobuchule kunye nendlela aba manani abachaphazela ngayo izibalo ezenziwa ngama- opticist, optometrists kunye ne-ophthalmologists .
Ezinye izibhalo
Ezi zilandelayo zimbalwa ezinye izifinyezo onokuhlangabezana nazo kwi-eyeglass yakho yesigcawu:
- I-SVD - Umbono ongaboniyo omnye, okanye iiglasi ezikude kuphela
- I-SVN - Umbono ongabonanga, okanye iiglasi zokufunda kuphela
- I-Sphere - Amandla amacandelo anegunya elifanayo kuzo zonke i-meridians
- Isilinda - I-cylinder yamandla ilungisa i-astigmatism kwaye ibonisa umehluko kumandla amakhulu kakhulu kweso kunye nobuthathaka obukhulu kweso, ngokuqhelekileyo lihlukaniswe ngama-90 degrees.
- I-Axis - ibonisa i-angle (kwi-degrees) phakathi kweemeridians ezimbini zamehlo astigmatic
- I-PD - (umgama we-pupillary, okanye umgama phakathi kwamaziko ababini ababini phakathi kwamehlo) Lo mlinganiselo kubalulekile ekuqulunqeni iiglasi ezizilungele ukugqoka kwaye zihamba kakuhle.
- I-Prism - I-Prism ayiqhelekanga. Ngokuqhelekileyo umiselwe ukuba ususe umfanekiso ngendlela ethile kwizigulane ezine-eye- strabismus okanye enye imisipha yamehlo okanye ukugxilwa kweengxaki.
Njengoko uyakubona, ukufunda i-glassglass yakho ye-eyeglass kunokudideka. Nangona kunjalo, ngokufunda okufutshane kunye nokuziqhelanisa, uya kukwazi ukufunda i-eyeglass yakho yesigqirha njengepro if you ever need.
Umthombo:
Eskridge, J. Boyd, uJohn Amos noJimmy D. Bartlett. Iinkqubo zeCliniki kwi-Optometry. I-Copyright 1991 ngu-JB Lippincott Inkampani, Isahluko 18 - "Ukuchithwa kwangasese kweMonocular" nguPollasky Michael, iphepha 174-188.