Limodzi mwa mafunso omwe anthu ambiri amamva akayika ma lens awo ndi, "Ndi index iti ya refractive yomwe mukufuna?"Ndikukhulupirira kuti anthu ambiri sakumvetsa mawu akatswiri, tiyeni tiphunzire za izo lero!
Anthu ambiri masiku ano amakhulupirira kuti magalasi okwera mtengo amakhala abwino!Akatswiri amaso ambiri, pozindikira psychology ya ogula, nthawi zambiri amagwiritsa ntchito refractive index ngati malo ogulitsa kuti awonjezere mtengo wa magalasi kuti apeze phindu lalikulu pazachuma.Ndiye kuti, kuchuluka kwa refractive index, kumachepetsa mandala, komanso mtengo wake!
Ubwino waukulu wa magalasi apamwamba kwambiri ndi kuwonda kwawo.Ogula posankha magalasi, ayenera kusankha molingana ndi madigiri osiyanasiyana a diso kuti agwirizane ndi iwowo, magwiridwe antchito abwino kwambiri a mandala, kufunafuna akhungu kwa index yayikulu ya refractive sikofunikira, koyenera ndikofunikira kwambiri!
Magalasi abwino owoneka bwino amayenera kutanthauza magalasi okhala ndi mawonekedwe abwino owoneka bwino, omwe amawonetsedwa ndi kutumizirana mwachangu, kumveka bwino, kubalalitsidwa pang'ono, kukana kuvala bwino, zokutira bwino komanso chitetezo chabwino.
Nthawi zambiri refractive index of lens imaphatikizapo 1.49, 1.56, 1.61, 1.67, 1.74, 1.8, 1.9.
Kuchokera kwa akatswiri, kusankha index refractive nthawi zambiri malinga ndi izi:
1. Digiri ya myopia.
Myopia ikhoza kugawidwa mu myopia yofatsa (mkati mwa madigiri 3.00), myopia yapakati (pakati pa 3.00 ndi 6.00 madigiri), ndi myopia yapamwamba (pamwamba pa madigiri 6.00).
Nthawi zambiri KULANKHULA KUWERA NDI MYOPIA wapakatikati (madigiri 400 kuchepera) CHOICE REFRACTIVE INDEX NDI 1.56 CHABWINO, (300 madigiri mpaka 600 madigiri) MU 1.56 KAPENA 1.61 MITUNDU IWIRI iyi ya kusankha REFRACTIVE index, madigiri 600 pamwamba angaganizire 1.611 kapena refractive 1. mandala.
Mlozera wa refractive ukakhala wapamwamba kwambiri, kuwunikiranso kumachitika pambuyo poti kuwala kumadutsa mu lens, ndipo lens imachepa kwambiri.Komabe, kuchuluka kwa refractive index ndi, m'pamenenso kufalikira kumakhala kovuta kwambiri, kotero kuti lens yapamwamba ya refractive index imakhala ndi nambala yotsika ya Abbe.Mwa kuyankhula kwina, pamene refractive index ndi yapamwamba, mandala amakhala ochepa, koma poyang'ana zinthu, maonekedwe a mtunduwo sakhala olemera kwambiri poyerekeza ndi 1.56 refractive index.Zomwe zatchulidwa pano ndizosiyana pang'ono poyerekezera.Ndi ukadaulo wamakono, mandala okhala ndi index yayikulu ya refractive nawonso ndiwowoneka bwino.Ma lens apamwamba a refractive index nthawi zambiri amagwiritsidwa ntchito pamadigiri masauzande.
2. Zofunikira pamutu.
Kusankha refractive index malinga ndi mlingo wa myopia si mtheradi, koma ayenera pamodzi ndi kusankha chimango ndi mkhalidwe weniweni wa diso kusankha.
Tsopano myopic digiri zambiri mkulu, pa zisanu mpaka zisanu ndi chimodzi baidu a myopia, otsika refractive index wa mandala adzakhala wandiweyani, wachibale kulemera adzakhala ochepa zazikulu, pa nthawi iyi, ngati kufunafuna wokongola digiri ndi apamwamba, ife amati kuposa 1.61 refractive index, Komanso posankha chithunzi chimango kupewa lalikulu bokosi mtundu, kotero mabuku, magalasi digiri ya kukongola ndi chitonthozo ndi bwino.
Kutsiliza: KUSANKHA refractive index ayenera zochokera malangizo a akatswiri optometrist, malinga ndi mlingo wa myopia, chimango kukula, zokongoletsa zosowa, zooneka chitonthozo, mowa kuchuluka ndi mfundo zina zonse, zoyenera ndi zofunika kwambiri.
Nthawi yotumiza: Aug-26-2022