Iilensi ezitshintsha umbala wamehlo, azihambelani kuphela nalabo abafuna ukulungisa ukubonakala kancinci, kodwa nakwabasetyhini abangaboni kakuhle , abavame ukubona nokubukeka ngcono. Yiyo i-lens i-toning edlalwa ngabaqalayo: ngenxa yombala okhanyayo, ibonakala ngokucacileyo kwiso, kuba kulula ukubona kwaye ubuyele kwindawo ukuba i-lensi ihamba. Makhe sithethe ngokulungisa iilensi zamabala kunye nama-lens kulabo bathetha ukufaka i-excentrics kumfanekiso wabo.
Ziziphi amagama zamalensi atshintsha umbala welihlo?
Kukho iilensi ezahlukeneyo zokutshintsha umbala wamehlo, kuxhomekeke kwinjongo ephambili:
- I-lens yokulungiswa kombono ngomthunzi oqinisa umbala wemvelo wamehlo;
- I-lens yokulungiswa kombono ngomthunzi, ukutshintsha amakhadi kwimibala yemvelo yamehlo;
- iilensi zokutshintsha umbala wamehlo aphilileyo;
- ilensi ukutshintsha umbala wamaso amnyama;
- iilensi ezigcobayo.
Ukuba uthatha isigqibo sokukhetha iilensi zoqhagamshelwano ukutshintsha umbala welizwi kuphela ukutshintsha umfanekiso, kwaye ukulungiswa kwamehlo akudingeki, umbala wendalo we-iris yakho kufuneka uthathwe njengendawo yokuqala. Ukuze unike umnyama omnyama, amehlo aluhlaza okwesibhakabhaka, okanye nayiphi na enye imthunzi, udinga iilensi ezininzi ezigubungela umbala wendawo. Ukungalungi kwelo lensi kukuba abadluli kunye nomoya. Kwakhona, iilensi, i-cardin ngokutshintsha umbala wamehlo, kunokubangela umbono ongenangqungquthela, ukuba ungatshintshelwa kwicala. Oku kubangelwa ukuba umgca wemibala emininzi isetyenziswe malunga nomjikelezo wentsholongwane, ushiya indawo engaphezulu kweso sifundo.
Xa utshintshe ukukhanyisa, umfundi unendawo yokwandisa, kwaye xa uhamba ngaphaya kwe "window" kumbala owawujolise kuyo, uya kubona kakubi. Oku kuya kwenzeka xa i-lens ihamba. Kukho ezinye izinto ezingalunganga:
- Iilensi aziklanyelwe ukugqoka ixesha elide, kufuneka zisuswe iiyure ezili-10-12.
- Iilensi azivumeli ukuba umoya ugeleke kalula, ngoko ke, amaconsi amaso aya kufunwa kaninzi.
- Ama-lenses awadluli, amehlo akho aphelelwe ngamandla, kuba umthwalo kubo uphezulu.
Iilensi ezilula zokutshintsha umbala wamehlo, ngaphandle kokulungiswa okubonakalayo, kungcono ukuba unxibe iiyure ezingama-6-8. Iilenti zokuhlobisa iiliso zezilwanyana ezihlambulukileyo, okanye iipatheni, akufanele zigqwezele ixesha elide kuneeyure eziyi-2-3. Oku kuyinyani ngokukhethekileyo kwimikhiqizo yaseShayina.
Iilensi kunye ne-hue, eyenzelwe ukulungisa i-myopia kunye ne-astigmatism, kufuneka
Iilensi zokudibanisa ezicatshulwayo zokutshintsha umbala wamehlo
Eyona nto inobungozi kwamehlo kwaye kulula ukuyisebenzisa yileli lintshi. Isalathisi se-pigment kubo sitshintshile, kwaye ngoko zonke izinto ezingenanto zingekho. Iilensi ezinjalo zinokugqithwa ixesha elide. Ngokuqhelekileyo ii-ophthalmologists zicebisa ukuba kungenjalo ukutshintshwa kwee-lenses ezicatshulwa imihla ngemihla, kwaye zicwangciswe-ngenyanga. Okukuphela kwento yokuba loo lensi ifanelekile kuphela kubantu abanegrey, eluhlaza okwesibhakabhaka noluhlaza. Umthunzi omnyama awuyi kubonwa nonke.