Amanani akummiselo weglasi yakho ahambelana nokumila kwamehlo akho kunye namandla ombono wakho.Bangakunceda ubone ukuba unayo ukubona kufutshane, ukubona kude okanye i-astigmatism - kwaye ukuya kweliphi inqanaba.
Ukuba uyayazi into omawuyijonge, ungenza intsingiselo yamanani kunye nezifinyezo kwitshathi yakho kagqirha.
OD vs. OS: Enye kwiliso ngalinye
Oogqirha bamehlo basebenzisa izifinyezo "OD" kunye ne "OS" ukubonisa amehlo akho asekunene nasekhohlo.
● I-OD liliso lakho lasekunene.I-OD imfutshane ye-oculus dexter, ibinzana lesiLatini elithi "iliso lasekunene."
● I-OS liliso lakho lasekhohlo.I-OS imfutshane kwi-oculus sinister, isiLatini esithetha "iliso lasekhohlo."
Umyalelo wakho wombono unokuba nekholamu ebhalwe "OU."Esi sisishunqulelo sei-oculus uterque, elithetha "amehlo omabini" ngesiLatini.La magama ashunquliweyo axhaphakile kwimigqaliselo yeendondo, iilensi zokudibana kunye namayeza wamehlo, kodwa abanye oogqirha kunye neekliniki zikhethe ukwenza imigqaliselo yamehlo ibe yesimanjemanje ngokusebenzisaRE (iliso lasekunene)kwayeLE (iliso lasekhohlo)endaweni ye-OD kunye ne-OS.
Ingqukuva (SPH)
I-Sphere ibonisa ubungakanani bamandla elensi amiselweyo ukulungisa ukubona kufutshane okanye ukubona kude.Amandla eLens alinganiswa ngeediopter (D).
● Ukuba inani eliphantsi kwesi sihloko liza nophawu lothabatha (–),Ubona kufutshane.
● Ukuba inani eliphantsi kwesi sihloko linophawu lokudibanisa (+),ubona kude.
Isilinda (CYL)
I-Cylinder ibonisa ubungakanani bamandla e-lens afunekayoi-astigmatism.Ihlala ilandela amandla esphere kumyalelo weglasi yamehlo.
Inombolo ekwikholamu yesilinda inokuba nophawu lokuthabatha (ukulungisa i-astigmatism ebona kufutshane) okanye uphawu oludibanisayo (kwi-astigmatism ebona kude).
Ukuba akukho nto ivelayo kule kholamu, awunayo i-astigmatism, okanye iqondo lakho le-astigmatism lincinci kangangokuba akudingi kulungiswa.
I-axis
I-axis ichaza i-lens meridian engenawo amandla e-cylinderi-astigmatism echanekileyo.
Ukuba i-eyeglass prescription ibandakanya amandla e-cylinder, iphinda ifake ixabiso le-axis, elilandela amandla e-cylinder.
I-axis ichazwa ngenani ukusuka kwi-1 ukuya kwi-180.
● Inombolo ye-90 ihambelana ne-meridian ethe nkqo yeso.
● Inombolo ye-180 ihambelana ne-horizontal meridian yeso.
Yongeza
“Yongeza” nguloukongeza amandla okukhulisaifakwe kwindawo esezantsi yeelensi ezininzi ukulungisa i-presbyopia - ukubona kude kwendalo okwenzeka ngokukhula.
Inani elivela kweli candelo lommiselo lihlala lingamandla "plus", naxa awuboni uphawu lokudibanisa.Ngokuqhelekileyo, iya kuvela +0.75 ukuya +3.00 D kwaye iya kuba namandla afanayo kuwo omabini amehlo.
Iprism
Lo ngumyinge wamandla eprismatic, alinganiswa ngeeprism diopters ("pd" okanye unxantathu xa ubhalwa ngesisa), amiselwe ukubuyiselaulungelelwaniso lwamehloiingxaki.
Ipesenti encinci kuphela yemigqaliselo yeglasi yamehlo ibandakanya umlinganiselo weprism.
Xa ikhona, isixa seprism siboniswa kwi-metric okanye kwi-fractional IsiNgesi iiyunithi (0.5 okanye ½, umzekelo), kwaye isalathiso seprism siboniswa ngokuqaphela indawo ehambelana nayo "yesiseko" sayo (owona mgca mkhulu).
Izifinyezo ezine zisetyenziselwa ulwalathiso lweprism: BU = isiseko phezulu;BD = isiseko phantsi;BI = isiseko ngaphakathi (esingise empumlweni yomntu oyinxibileyo);BO = isiseko ngaphandle (kwindlebe yalowo uyinxibileyo).
Ukuba unomdla ongaphezulu okanye ufuna ulwazi oluthe kratya kwiilensi zamehlo, nceda ungene kwiphepha lethuhttps://www.universeoptical.com/stock-lens/ukufumana uncedo olungakumbi.