Nambala zomwe zili pagalasi lanu lagalasi zimagwirizana ndi mawonekedwe a maso anu ndi mphamvu ya masomphenya anu.Angakuthandizeni kudziwa ngati muli nawo kuyang'ana pafupi, kuyang'ana patali kapena astigmatism - ndi pamlingo wotani.
Ngati mukudziwa zomwe muyenera kuyang'ana, mutha kuzindikira manambala ndi mawu achidule pa tchati chomwe mwapatsidwa.
OD vs. OS: Limodzi pa diso lililonse
Madokotala a maso amagwiritsa ntchito chidule cha "OD" ndi "OS" kutanthauza maso anu akumanja ndi akumanzere.
● OD ndi diso lanu lakumanja.OD ndi chidule cha oculus dexter, mawu achilatini otanthauza “diso lakumanja.”
● OS ndi diso lanu lakumanzere.OS ndi chidule cha oculus sinister, Latin kutanthauza "diso lakumanzere."
Dongosolo lanu la masomphenya lingakhalenso ndi gawo lolembedwa "OU."Ichi ndiye chidule chaoculus uterque, kutanthauza "maso onse awiri" m'Chilatini.Mawu achidule awa ndi ofala pamankhwala opangira magalasi, ma lens ndi mankhwala a maso, koma madotolo ndi zipatala zina asankha kusintha malangizo awo a maso pogwiritsa ntchitoRE (diso lakumanja)ndiLE (diso lakumanzere)m'malo mwa OD ndi OS.
Chigawo (SPH)
Sphere imasonyeza kuchuluka kwa magalasi amphamvu omwe amaperekedwa kuti akonze zowonera pafupi kapena kuyang'ana patali.Mphamvu ya lens imayesedwa mu diopters (D).
● Ngati nambala yomwe ili pamutuwu ikubwera ndi chizindikiro chochotsera (-),ndinu openya pafupi.
● Ngati nambala yomwe ili pamutuwu ili ndi chizindikiro chowonjezera (+),mukuona patali.
Silinda (CYL)
Cylinder imasonyeza kuchuluka kwa mphamvu ya lens yofunikiraastigmatism.Nthawi zonse amatsatira mphamvu ya sphere pamankhwala agalasi.
Nambala yomwe ili mgawo la silinda ikhoza kukhala ndi chizindikiro chochotsera (chowongolera astigmatism) kapena chizindikiro chowonjezera (cha astigmatism yowona patali).
Ngati palibe chomwe chikuwoneka m'gawoli, mwina mulibe astigmatism, kapena digiri yanu ya astigmatism ndi yaying'ono kotero kuti sifunikira kukonzedwa.
Mzere
Axis imalongosola lens meridian yomwe ilibe mphamvu ya silindaastigmatism yoyenera.
Ngati mankhwala agalasi amaphatikizapo mphamvu ya silinda, iyeneranso kuphatikizirapo mtengo wa axis, womwe umatsatira mphamvu ya silinda.
Axis imatanthauzidwa ndi nambala kuyambira 1 mpaka 180.
● Nambala 90 imagwirizana ndi meridian yowongoka ya diso.
● Nambala ya 180 imagwirizana ndi meridian yopingasa ya diso.
Onjezani
"Add" ndiyeanawonjezera mphamvu yakukuzaamagwiritsidwa ntchito pansi pa magalasi ambiri kuti akonze presbyopia - kuyang'ana patali kwachilengedwe komwe kumachitika ndi zaka.
Nambala yomwe ikuwonekera mu gawo ili lamankhwala nthawi zonse imakhala mphamvu ya "plus", ngakhale simukuwona chizindikiro chowonjezera.Nthawi zambiri, idzakhala kuyambira +0,75 mpaka +3.00 D ndipo idzakhala mphamvu yomweyo kwa maso onse awiri.
Prism
Izi ndi kuchuluka kwa mphamvu ya prismatic, yoyezedwa mu prism diopters ("pd" kapena katatu ikalembedwa mwaufulu), yoperekedwa kuti ibwezerekuyanjanitsa kwa masomavuto.
Gawo laling'ono chabe la mankhwala agalasi lamaso limaphatikizapo kuyeza kwa prism.
Ikakhalapo, kuchuluka kwa prism kumawonetsedwa mu mayunitsi a Chingerezi a metric kapena ochepa (mwachitsanzo, 0.5 kapena ½), ndipo mayendedwe a prism akuwonetsedwa pozindikira malo ake "pansi" (m'mphepete mwake).
Mawu achidule anayi amagwiritsidwa ntchito polowera ku prism: BU = base up;BD = maziko pansi;BI = maziko mkati (ku mphuno ya wovala);BO = base out (ku khutu la wovala).
Ngati muli ndi zokonda zina kapena mukufuna zambiri zamaluso zamagalasi owonera, chonde lowetsani patsamba lathu kudzerahttps://www.universeoptical.com/stock-lens/kuti athandizidwe kwambiri.