Coloured lens: Indaba kokusungulwa elihlakaniphile

Mhlawumbe abaningi uzomangala ukuzwa ukuthi lens contact kusungulwe omunye ngaphandle uLeonardo da Vinci, ngisho 1508 echaza lens okuyinto, lapho ogibele yeso indoda balungise umbono ngokushintsha izakhiwo optical esweni.

Kuze 40s kwekhulu elidlule cishe yonke lens eyenziwe ingilazi sasivumela obukhulu, futhi ubukhulu yabo 20-30 mm (bamboza bonke ubuso yeso). lens okunjalo akukwazi ezigugile ngaphezu kwamahora ambalwa, ngoba kubangela ukuvuvukala corneal angaboni kahle, futhi ngemva lens esuswa iso, kwakudingeka esingaphezu kosuku olulodwa ukubuyisela cornea. Yiqiniso, ukuthi enjalo into njengoba lens anombala, ngenkathi ayaziwa kunoma ubani.

Ngo-1947 kwaba khona inhliziyo contact lens Uhlobo lokuqala yesimanje, eyenziwe ngepulasitiki ekhethekile, ukudalwa okuyinto ngaphezu konyaka owodwa, ososayensi wasebenza.

Futhi kuphela maphakathi nekhulu XX wayeklanyelwe yi hydrogel polymer, futhi kuze kube namuhla, ngesisekelo ngezinto zokwakha zesimanje iningi ekwakheni esobala futhi zonke izinhlobo contact lens anombala. Lokhu kwaziswa nezimo futhi ethambile anezakhi esiyingqayizivele: okuhambisa umoya-mpilo futhi ubamba amanzi.

Okwamanje kukhona phezu 150 izinhlobo ezahlukene izinto senzelwe womshini izinhlobo ezahlukene contact lens, izinga yabo ngcono usuku nosuku.

Esikhathini ukukhiqizwa izinto ezinjalo kubhekwa amandla abo, iphesenti lokuqukethwe amanzi, umoya-mpilo permeability, biocompatibility, Inkomba yezokubona kanye neminye imingcele.

Namuhla, ngosizo izinhlobo ezahlukene contact lens kungasiza hhayi kuphela umbono lesifanele ngaphandle izibuko zamehlo ngisho ukushintsha umbala amehlo, futhi ungakwazi kanyekanye ukukwenza kokubili.

Indlela ukukhetha lens kwesokudla ngaphandle kokuyekethisa impilo iso?

lens anombala nge diopters, zikhona kakade eminyakeni engaphezu kuka-30. Akukhona nje kuphela enhle, kodwa futhi elula kakhulu. Uma ekuqaleni base itholakala kuphela movie stars, ubani manje kalula ukushintsha umbala engokwemvelo amehlo lapho afuna. lens ngasinye siqukethe umbala toning iphethini noma umbala, bakwazi ukuthuthukisa umbala engokwemvelo Iso lomuntu siqu.

Nokho, ngaphambi kokwenza isinqumo ukuthenga lens anombala, kumele ayejwayele imithetho wokunakekela abazali ngoba nje. Noma yimuphi lens umbala Kudinga izitho zonke zinakekelane ngokufanayo ngokucophelela futhi izindlela lapho lisetshenziswa njengedivaysi lens elula kahle.

Ukuze imibala lens akusho ibakhathaze esweni, kudingeka ngokucophelela ukukhethwa imikhiqizo kanye nemikhiqizo ukunakekelwa ukuzifinyelela.

Ngamunye lens anombala kumelwe sihlanzwe ngokucophelela futhi bahlanza. Kodwa ungakhohlwa ukuthi ukuze anakekele lens anombala zidinga izixazululo ekhethekile okuyinto musa bhala futhi ngeke kuyilimaze upende. Ukuze uthole ukwaziswa sendlela anakekele lens of brand lesitsite, ungahlala salon ka yokukhanya, lapho uhlela ukuthenga lens. lens Ungalokothi ahlanzekile anemibala nezixazululo equkethe i-hydrogen peroxide - kusukela kule base naba buthuntu.

Okubaluleke kakhulu, ngaphambi kokuthenga ama-lenses anemibala, qiniseka ukuhlolwa kudokotela wezifo zamehlo. Ucwaningo lubonisa ukuthi ukusetshenziswa njalo egqoke lens anombala kungehlisa izinga acuity ezibukwayo nekuphikisana nozwela iso.