1.56 Ifoto ya Bifocal Ifoto ya UV420 Ikata Ubururu bwiza

Iyo guhindura ijisho ry'umuntu gucogora bitewe n'imyaka, aba akeneye gukosora icyerekezo cye ukurikije icyerekezo cya kure kandi cyegereye. Muri iki gihe, akenera kwambara ibirahuri bibiri bitandukanye, ibyo bikaba bitoroshye. Niyo mpamvu, birakenewe gusya imbaraga ebyiri zitandukanye zo kuvunika kumurongo umwe kugirango uhinduke lens mubice bibiri. Izo lens zitwa bifocal lens cyangwa ibirahuri bifocal.

Lens ya Binocular cyangwa lens bifocal ni lens irimo uduce tubiri two gukosora icyarimwe kandi ikoreshwa cyane mugukosora presbyopia.

Lens ya Binocular cyangwa lens bifocal ni lens irimo uduce tubiri two gukosora icyarimwe kandi ikoreshwa cyane mugukosora presbyopia. Agace ka lens ya binocular ikosora iyerekwa rya kure ryitwa iyerekwa rya kure, naho agace kegeranye gukosorwa bita iyerekwa ryegereye hamwe n’ahantu ho gusomera. Mubisanzwe, umurima wa kure ni munini, nuko nanone witwa umurima nyamukuru, mugihe umurima wegereye ari muto, bityo witwa sub-field.

Itara ry'ubururu rigabanyijemo inyungu kandi ryangiza. Itara ry'ubururu rifite uburebure buri hagati ya 415 na 455 nm ni urumuri rugufi rwangiza ubururu, rukeneye kurindwa. Ukurikije ihame ryibara ryuzuzanya ryumucyo, ubururu numuhondo ni amabara yuzuzanya, ibirahuri rero nibikorwa byo kurinda urumuri rwubururu bizaba umuhondo gake ugereranije ninzira zisanzwe. Iyo urwego rwo hejuru rwo guhagarika urumuri rwubururu rwangiza, umwijima wijimye wamabara yibirahure birwanya ubururu.