Kunezinkolelo eziningi mayelana nokuthi yimiphi imibono kuzinja. Eqinisweni, ukubona izinja kuzwela ngokulingana nokubona kwanoma yimuphi omunye umzingeli. Inja inomkhakha wokubukwa kabanzi. Umbala ngokwawo awubalulekile ngokukhethekile.
Izinja zingcono kunabantu ukuhlukanisa ngisho nokunyakaza okuncane kude. Kodwa-ke, ngesikhathi esifushane babona okubi kunathi. Iso lenja licebile kakhulu kunomuntu. Ngokuvamile, isimo se-lens sishintsha, sandisa ubude besikhathi eside, kepha lokhu akukwenzeka ngendlela ephumelelayo njengomuntu. Ukuzwela kweso lenja kuphakeme kunelabantu, kodwa kunzima kakhulu ukuhlukanisa phakathi kwezinto ezihleliwe ngokuphelele kunoma iyiphi ibanga.
Umbono wendawo yokuphambana uhluka kakhulu phakathi kwezinhlobo zezilwane. Ngokuvamile, kuxhomeke endaweni esenzakalayo futhi usike iso ngokwayo.
Wonke ama-shades wegrey
Kuyinto encane ukukholelwa ukuthi izinja zinamehlo amnyama namhlophe. Ngokuvamile, umbala wombala ukhona ezinja, kodwa hhayi ngendlela ecacile. Umbono wombala awubalulekile kakhulu kubantu abadliwayo, ngokuqondene nezilwane, okuphila kwabo kuxhomeke kumajikijolo enemibala, izithelo ezikhanyayo, imbewu kanye namantongomane. Iso leja linesakhiwo esivamile, esivamile kubo bonke abameleli bomthetho wezilwane ezidlayo. I-retina iqukethe amangqamuzana amaningi anesithombe - izintambo. Yilawa maseli abonakalisa konke okubonwa emthunzini omhlophe nomnyama. Izinduku zizwela ukukhanya, ngisho namazinga aphansi okukhanya. Amaseli akhethekile ombono wombala - ama-cones - ase-retina ngendlela encane kakhulu.
Abafundi bamehlo enja banekhono lokukhulisa kakhulu ukuze bambambe ngangokunokwenzeka konke ukukhanya okungenzeka, ukuthuthukisa ikhwalithi nokusebenza kombono ebusuku.
Izilonda ze-Lacrimal zivikela i-cornea ekungeneni okungenzeka. Izinja zinayo ijwabu leso lesithathu, elihlala livaliwe njalo. Umsebenzi walo oyinhloko ukuvikela nokuhlanza iso lokungcola kwangaphandle.
Ukukhubazeka okubonakalayo
Ngokushesha noma kamuva, abanikazi baqala ukuqaphela ukuthi inja iyaphela. Ukuze ulahle konke ukungabaza noma, ngokuphambene nalokho, ukuze uqinisekise ukwesaba kwabo, kubalulekile ukwazi ukuthi ungabheka kanjani amehlo enja endlini. Ungathutha izinto ezincane zombala ompunga eduze nenja, isibonelo, ugoqa amabhola phansi. Njengoba izinja zisabela ngokuqinile ekunyakaza, zizolile