Izindaba
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Amalensi alwa nenkungu, kulokhu shaya ubuso!
Qala imodi ye-sauna yasehlobo, isiphephetha-moya asikwazi ukusekela umzuzu wokuphila kwakhe, ngenxa yomehluko omkhulu wokushisa wangaphakathi nangaphandle, ukukhishwa kwengilazi yomndeni kwakuwungqimba lwenkungu, ngaphakathi nangaphandle kwehhovisi, ihamba eduze kwehhovisi. umzila ongaphansi komhlaba, ukuqina komjuluko, ilensi ye-f...Funda kabanzi -
Bheka kude futhi ubone eduze!Kungakanani okwaziyo ngamalensi e-multifocus aqhubekayo?
Izinto ezidinga ukunakwa ①Uma ufanisa izibuko, usayizi wozimele udingeka ngokuqinile uma kukhethwa uhlaka.Ububanzi nobude befreyimu kufanele kukhethwe ngokuya ngebanga lomfundi.②Ngemva kokugqoka izibuko, uma ubuka izinto kuzo zombili...Funda kabanzi -
Kungani abantu bedinga amalensi aqhubekayo?
Okungavumelekile kombono owodwa: Uma abantu abangaphezu kweminyaka engama-40 ubudala, ipheya eyodwa yezibuko zokubona ingase ingakwazi ukuhlangabezana nezidingo zabo.Babekwazi ukubona ibanga kodwa bengasondele, noma babone eduze kodwa hhayi ibanga.Ngalesi sikhathi, badinga ukugqoka amapheya amabili ezingilazi, ...Funda kabanzi -
Uyini umehluko phakathi kwe-single vision, bifocal and progressive?
1, Umbono owodwa: Umbono owodwa uhlanganisa ibanga, ukufunda kanye ne-Plano.Izibuko zokufunda zingasetshenziswa ukubuka ifoni yesandla, ikhompuyutha, ukubhala nokunye.Lezi zibuko zisetshenziselwa ukubona izinto ezisondelene ngokukhethekile, ezingenza indawo yokuhlala yamehlo ibe ...Funda kabanzi -
Abantu babona kanjani eduze?
Imbangela eqondile yokungaboni kahle eduze ayiqondwa ngokuphelele, kodwa izici ezimbalwa ezinomthelela kuleli phutha lokubuka eceleni, elibonakala ngokubona kahle eduze kodwa okufiphele kude.Abacwaningi abacwaninga ngokubona eduze bathole okungenani okhiye ababili ...Funda kabanzi -
Kuyini ukukhanya okuluhlaza okwesibhakabhaka futhi kungani kufanele uthenge amalensi okukhanya okuvimba aluhlaza okwesibhakabhaka?
Ukukhanya okuluhlaza okwesibhakabhaka i-spectrum yokukhanya ebonakalayo enobude obufushane beza beza namandla aphezulu, futhi kufana nemisebe ye-ultraviolet, ukukhanya okuluhlaza kunakho kokubili izinzuzo nezingozi.Ngokuvamile, ososayensi bathi i-spectrum yokukhanya ebonakalayo ihlanganisa imisebe ye-electromagnetic ene-wavelengths ...Funda kabanzi