Manambala omwe ali pagalasi lanu la maso akugwirizana ndi mawonekedwe a maso anu ndi mphamvu ya maso anu. Angakuthandizeni kudziwa ngati muli ndi vuto la maso. kuwona pafupi, kuwona patali kapena astigmatism — ndipo mpaka pamlingo wotani.
Ngati mukudziwa zomwe muyenera kuyang'ana, mutha kumvetsetsa manambala ndi zidule zomwe zili pa tchati chanu cha mankhwala.
OD vs. OS: Limodzi pa diso lililonse
Madokotala a maso amagwiritsa ntchito mawu ofupikitsa akuti “OD” ndi “OS” kutanthauza maso anu akumanja ndi akumanzere.
● OD ndi diso lanu lamanja. OD ndi chidule cha oculus dexter, mawu achilatini otanthauza “diso lamanja.”
● OS ndi diso lanu lakumanzere. OS ndi chidule cha oculus sinister, ndipo Chilatini chimatanthauza “diso lakumanzere.”
Mankhwala anu a masomphenya angakhalenso ndi mzere wolembedwa kuti "OU." Ichi ndi chidule chaoculus uterque, zomwe zikutanthauza "maso onse awiri" mu Chilatini. Mawu achidule awa ndi ofala kwambiri pa mankhwala a magalasi, Magalasi olumikizana ndi maso ndi mankhwala a maso, koma madokotala ndi zipatala zina asankha kusintha mankhwala awo a maso pogwiritsa ntchitoRE (diso lamanja)ndiLE (diso lamanzere)m'malo mwa OD ndi OS.
Chilengedwe (SPH)
Chigawo chimasonyeza kuchuluka kwa mphamvu ya lenzi yomwe yaperekedwa kuti ikonze vuto la kuwona pafupi kapena kuwona patali. Mphamvu ya lenzi imayesedwa mu diopters (D).
● Ngati nambala yomwe ili pansi pa mutuwu ikubwera ndi chizindikiro chochotsera (–),umaona pafupi.
● Ngati nambala yomwe ili pansi pa mutuwu ili ndi chizindikiro chowonjezera (+),Mumaona patali.
Silinda (CYL)
Silinda imasonyeza kuchuluka kwa mphamvu ya lenzi yomwe ikufunikaastigmatismNthawi zonse imatsatira mphamvu ya mpira yomwe ili pa mankhwala a magalasi.
Nambala yomwe ili mu mzere wa silinda ikhoza kukhala ndi chizindikiro cha minus (chowongolera astigmatism yowonera pafupi) kapena chizindikiro cha kuphatikiza (cha astigmatism yowonera patali).
Ngati palibe chomwe chikuwoneka mu gawo ili, mwina mulibe astigmatism, kapena mulingo wanu wa astigmatism ndi wochepa kwambiri kotero kuti suyenera kukonzedwa.
Axis
Axis imafotokoza za meridian ya lens yomwe ilibe mphamvu ya silinda kuti igwire ntchito.astigmatism yolondola.
Ngati mankhwala a magalasi akuphatikizapo mphamvu ya silinda, ayeneranso kukhala ndi mtengo wozungulira, womwe umatsatira mphamvu ya silinda.
Mzerewu umatanthauzidwa ndi nambala kuyambira 1 mpaka 180.
● Nambala 90 ikufanana ndi meridian yoyima ya diso.
● Nambala 180 ikufanana ndi meridian yopingasa ya diso.
Onjezani
"Onjezani" ndimphamvu yowonjezera yowonjezeraImayikidwa pansi pa magalasi a multifocal kuti ikonze vuto la presbyopia — kuwona patali kwachilengedwe komwe kumachitika ndi ukalamba.
Nambala yomwe ikupezeka mu gawo lino la mankhwala nthawi zonse imakhala ndi mphamvu ya "kuphatikiza", ngakhale simukuwona chizindikiro cha kuphatikiza. Nthawi zambiri, imakhala kuyambira +0.75 mpaka +3.00 D ndipo idzakhala mphamvu yofanana ya maso onse awiri.
Prism
Uwu ndi kuchuluka kwa mphamvu ya prismatic, yomwe imayesedwa mu prism diopters ("pd" kapena triangle ikalembedwa mwaulere), yolembedwa kuti igwirizane ndikulinganiza masomavuto.
Ndi gawo lochepa chabe la mankhwala operekedwa ndi magalasi a m'maso omwe ali ndi muyeso wa prism.
Ikakhalapo, kuchuluka kwa prism kumawonetsedwa mu mayunitsi a Chingerezi a metric kapena fractional (0.5 kapena ½, mwachitsanzo), ndipo komwe prism imatsogolera kumawonetsedwa polemba malo ogwirizana a "base" yake (m'mphepete mwake wokhuthala kwambiri).
Mafupikitsidwe anayi amagwiritsidwa ntchito pofotokoza njira ya prism: BU = maziko mmwamba; BD = maziko pansi; BI = maziko mkati (kutsogolo kwa mphuno ya wovala); BO = maziko kunja (kutsogolo kwa khutu la wovala).
Ngati muli ndi zokonda zina kapena mukufuna zambiri zaukadaulo pankhani ya magalasi owonera, chonde lowetsani patsamba lathu kudzera muhttps://www.universeoptical.com/stock-lens/kuti apeze thandizo lina.