The birth of contact lenses dates back to Leonardo da Vinci, who noted an optic continuum between the inner surface of the water in a glass sphere and the outer surface of the cornea, when immersing the latter in the first. At a later time, in 1636, Cartesio published “The Dioptrics”, in which he perfected Leonardo’s idea. He explained that a tube filled with water and placed on the cornea, ending with a lens which perfectly matches the cornea, is able to cancel or reduce the eye’s refractive anomalies.
“Modern” contact lenses date back to the discoveries of A.E.Fick, E. Kalt, A.E. Muller, in Switzerland, France and Germany, respectively. These lenses were made of a glassy material and placed on the sclera. They had a big diameter and were poorly physiologically tolerated. The first plastic lenses were created by two American researchers, Dallos and Fleinbloom. Considerably lighter than glass ones, their advantages are immediate. The first hard corneal contact lenses were manufactured in 1950, their diameter was smaller than the cornea’s one and they had been designed by Bier. In the early ’60s two Czechoslovakian researchers, Lim and Wichterle, designed the first soft contact lenses, made with idrogel. In the late ’60s also hard hortocheratologic lenses began to be used. They were designed and applied with the aim to modify the corneal profile during the day in order to reduce myopia. Hortocheratologic lenses attain in 2002 the Food and drugs Administration approval for the correction of myopia up to 6 dioptres, with a maximum of 1.75 of astigmatism. Today hortocheratologic lenses use super permeable to oxygen materials and they are used for corrective purposes only during sleep. Hard lenses and gas permeable ones are nowadays almost completely abandoned because soft lenses can correct ametropias up to 15 dioptres. In our stores you can find all types of soft corneal lenses, made by idrogel and hyaluronic acid, capable of satisfying every need of the myopic, hyperopic, astigmatic or even farsighted customer! Our qualified staff will help you choosing both the most appropriate cleaning liquid and lenses, among daily, bi-weekly, and monthly ones and will support you during the first applications. />
Lens za mawasiliano zilitengenezwa na Leonardo da Vinci, ambaye aliona mwendelezo wa macho kati ya uso wa ndani wa maji katika mviringo wa kioo na uso wa nje wa cornea wakati wa kuzamisha mwisho katika kwanza. "Mwaka 1636 Cartesio alichapisha kitabu chake cha ""The Dioptrics"" ambacho kilikuwa na maneno ya Leonardo." "Mchunguzi huyo alieleza kwamba ""tubu iliyojaa maji na kuwekwa kwenye kornea, ikimalizika kwa lensi inayolingana kikamilifu na kornea, ina uwezo wa kufuta au kupunguza kasoro za refractive za jicho.""" Lens za mawasiliano za "siku hizi" zilitengenezwa na A.E. Fick, E. Kalt, A.E. Muller, katika Uswisi, Ufaransa na Ujerumani, kwa mtiririko huo. Lens hizo zilitengenezwa kwa vifaa vya kioo na kuwekwa kwenye sclera. Zilikuwa na kipenyo kikubwa na hazikuvumiliwa vizuri na mwili. Lens za kwanza za plastiki zilitengenezwa na watafiti wawili Wamarekani, Dallos na Fleinbloom. Kwa kuwa ni nyepesi sana kuliko zile za kioo, faida zao ni za papo hapo. Lens za kwanza za mawasiliano za cornea zilitengenezwa mwaka 1950 na zilikuwa na kipenyo kidogo kuliko cha cornea. Katika miaka ya 1960, watafiti wawili wa Czechoslovakia, Lim na Wittler, walibuni lensi za kwanza laini za mawasiliano, zilizotengenezwa kwa idrogel. Katika miaka ya 1960 pia lenses ngumu hortocheratological ilianza kutumika. Zilikuwa zimebuniwa na kutumiwa kwa lengo la kurekebisha profile ya corneal wakati wa mchana ili kupunguza myopia. Lens za Horticultural zinapatikana katika idhini ya Idara ya Chakula na Dawa ya Marekani kwa ajili ya marekebisho ya myopia hadi diopters 6 na astigmatism ya juu ya 1.75 Lens za Horticultural za kisasa zinatumia vifaa vya oksijeni na hutumiwa kwa madhumuni ya kurekebisha tu wakati wa usingizi. Lens ngumu na gas permeable ni karibu kabisa kutelekezwa kwa sababu lensi laini inaweza kurekebisha ametropias hadi 15 diopters. Katika maduka yetu unaweza kupata aina zote za lensi laini za kornea, zilizotengenezwa na idrogel na asidi ya hyaluronic, uwezo wa kuridhisha kila mahitaji ya mteja mwenye myopia, hyperopia, astigmatic au hata farsighted! Wafanyakazi wetu wenye sifa watakusaidia kuchagua kioevu cha kusafisha kinachofaa zaidi na lensi, kati ya kila siku, kila wiki, na kila mwezi na watakusaidia wakati wa matumizi ya kwanza. <unk>