DAn sanya wa ruwan tabarau suna ne saboda akwai ƙananan ruwan tabarau da ake iya gani a ido a kusurwoyi na musamman a saman ruwan tabarau, waɗanda aka rarraba a siffar maki, don haka aka sanya musu suna. Ruwan tabarau na Defocus Incorporated Nau'in gilashin kariya ne na myopia da kuma firam ɗin sarrafawa, waɗanda suka ƙunshi yankuna biyu. Ɗaya shine yankin gani na tsakiya da ake amfani da shi don gyara kurakuran refractive (myopia, hangen nesa da astigmatism), ɗayan kuma shine tsakiyar da ke faɗaɗa zuwa gefen ruwan tabarau. Yankunan defocus na myopic na yankuna da yawa. Lokacin da mai sawa ya kalli abubuwa a nesa daban-daban, ruwan tabarau na defocus da aka haɗa da sassa da yawa na iya samar da hangen nesa mai haske da defocus na myopia a lokaci guda, kuma yana iya hana da sarrafa ci gaban myopia yayin gyara hangen nesa.
Ka'idar ita ce a yi amfani da hanyar mayar da martani ta halitta ta ido - abin da ke faruwa na emmetropization, ta yadda gani, ci gaban gani da hoton ido na ido su ne mafi kusanci da tasirin gani na ido na emmetropic.
A halin yanzu, myopia na gaskiya na matasa galibi myopia ne na axial, wanda ke faruwa ne sakamakon girman axis na ido. Saboda tsawaitar ƙwallon ido, ana haska matsayin hoton a gaban retina. Lokacin gyara ruwan tabarau na myopia na yau da kullun, gyara mafi bayyananne yana nufin hangen nesa na tsakiya ne kawai, kuma ƙirar ruwan tabarau da kanta tana ƙaruwa a hankali ko kuma ba ta saba da tsari ba yana ƙara matakin yankin da ke wajen hasken tsakiya. Bayan gyara, ana iya haska abu ɗaya a kan fovea na macula ba tare da wata matsala ba, yana tabbatar da gani mai kyau. Duk da haka, abin da retina na gefe ya karɓa ba ya kan retina kai tsaye, amma ana ɗaukarsa a gefen baya na retina. Wannan kuma zai haifar da abin da muke la'akari da cire hankali na hyperopia, wanda a halin yanzu ana gane shi a matsayin ɗaya daga cikin manyan abubuwan da ke haifar da samuwar myopia da zurfafawa ta hanyar masu bincike. Wannan saboda rage hankali na hyperopia a gefen baya na retina yana ƙarfafa haɓakar axis na ido zuwa gefen baya, yana haifar da haɓakar axial da ƙarin zurfafa myopia.
An ƙera ƙaramin ruwan tabarau a yankin cire ido musamman don samun digiri daban-daban daga ruwan tabarau ɗaya a yankin gyara, wanda ke sa hoton ya faɗi a gaban retina, wanda ke haifar da cire ido na myopia da kuma samar da sigina zuwa ga gefen ido gaba, wanda ke haifar da jinkirin zurfafa ido na myopia.
Riba:
1. Tasirin sarrafa myopia a bayyane yake: tasirin jinkiri akan ci gaban digiri na myopia yana da girma har zuwa 59%, kuma tasirin sarrafawa akan ci gaban axial yana da girma har zuwa 60%.
2. Sauƙin daidaitawa: Gilashin myopia defocus masu maki da yawa nau'in ruwan tabarau ne na musamman na ido ɗaya, kuma dacewar abu ne mai sauƙi.
3. Jin daɗi sosai: ruwan tabarau masu hangen nesa da yawa ba su da yankin astigmatism kuma ba sa taɓa idon ɗan adam. Ba kamar ruwan tabarau na ido ba, waɗanda ke taɓa cornea, ba za su haifar da rashin jin daɗi ba.
4. Kulawa mai sauƙi: Idan aka kwatanta da sauran ruwan tabarau, kamar ruwan tabarau na orthokeratology, waɗanda ke buƙatar wanke hannu da kuma tsaftace jiki duk lokacin da aka cire su aka saka su, kuma kula da ruwan tabarau yana buƙatar mafita ta musamman ta kulawa.
5. Tasirin jinkirin myopia yana da girman 59%, kuma tasirin sarrafawa na ci gaban axial yana da girman 60%.
https://www.zjideallens.com/ideal-defocus-incorporated-multiple-segments-lenses-product/
Lokacin Saƙo: Oktoba-16-2023