Oxhumene nabo bokusingatha ukuhlukunyezwa nokuntuleka kombala
Lapho abantu abaningi becabanga ngama-contact lens, bacabanga ngabo njengamadivayisi asetshenziselwa ukuthuthukisa umbono wabo. Kodwa ama-lens axhumene nawo asetshenziselwa okungaphezulu kokulungiswa kombono: ngezinye izikhathi amalingo okuxhumana nawo asetshenziselwa ukuphatha noma ukuphatha izifo zaso kanye nezifo. Odokotela bavame ukubhekisela kulawa ma-lens njengabaxhumana nodokotela. Lezi lens ezikhethekile zifanelana ngendlela efanayo nama-lens wokuxhumana ajwayelekile, kodwa ngokuvamile ayenziwe ngezinto ezahlukene.
Izindlela ezimbili odokotela abasebenzisa ama-lens othintana nabo ngokwemithi zihlanganisa ukuphathwa kwezifo zokuhlushwa kwesisu nokuthuthuka kombala.
Oxhumene nabo kanye nokuhlukunyezwa kwe-Epileptic
Ukuzwela ukukhanya kungaba yinkinga enkulu kubantu abahlukunyezwa yisifo sokufa . Ukukhanya okukhanyayo kungabangela ukukhathazeka okukhulu uma umuntu engozini yokuzizwa ekhungathekile, futhi izibuko ezivamile azisizi ngaso sonke isikhathi futhi zingaba nzima ukugqoka endlini.
Kodwa izifundo zibonise ukuthi ama-lens axhumene ne-blue-tinted angasiza ukunciphisa isithombe se-photoparoxysmal noma isithombe esixhumene nesiguli esiphethwe yizinye iziguli zesifo sofuba. Impendulo ye-photoparoxysmal ichaza umsebenzi ongavamile wobuchopho oveza impendulo ekuvuseleleni okukhanyayo, ukukhanya kokukhanyisa, noma ukukhanya kwe-strobe okubangela ukugubha. Ama-lens aluhlaza abonakala ephumelela kakhulu kuneminye imibala. Ikhamphani yezokwelapha okuthiwa i-Zeiss ikhiqiza i-lens ebizwa nge-Z1 ephumelela kakhulu ekunciphiseni le mpendulo.
Ososayensi baphenya ukuthi yiliphi uhlobo lwe-wavelength okufanele livinjiwe ukunciphisa lezi zinhlobo zokungavamile okungavamile. Kwesinye isifundo, uneminyaka emibili ubudala ehlushwa isifo esiqinile nesifo sokuqothulwa kuyoba nezinto ezinjenge-muscle contractions futhi zishaywa ngesandla kanye nokunyakaza kwesibindi kanye nezinyathelo zejwabu leso. Ososayensi bazama ama-lens ahlukahlukene aqoshiwe futhi bathola ukuthi amanye amalensi aqoshiwe empeleni avimbela ukuqubuka okukhulu.
Izifundo zabo zikhomba ukuthi amangqamuzana athile e-retina angavinjelwa ukuze anciphise ama-seizures.
Oxhumene nabo kanye nobunzima bombala
Ama-lens ahlanganisiwe abuye aboniswe ukusiza abantu abanobumpumputhe bombala . Ngesikhathi ubuphofu bombala weqiniso engavamile, abantu abaningi banenkinga yokubala kombala. Ngokuntuleka kombala, imibala ehlukene itholakala kodwa ngokuvamile ididekile.
Ngo-1974, itholakale ukuthi i-lens ebomvu noma emagenta enemibala efakwe ebusweni obungabonakali kuyohlale ithuthukisa ukuhlukanisa umbala ekuhlolweni kombono wombala. Elinye lamalensi athandwa kakhulu kulolu hlobo lwenkinga yi-lens X-Chrome, i-lens ebomvu enomshini obomvu obunzima obunzima obugqoke iso elingabonakali elibonakala lithuthukisa umbono wombala kubantu abomvu obomvu obomvu.
I-Marietta Vision yinkampani eyakha uhlelo lwe-lromaGen lens. Lolu hlelo lensiza yokuxhumana luhlinzeka ngamaphuzu amaningana ngama-hues ahlukene kanye nokucindezeleka okuvumela udokotela ukuba akhethe ukuthambisa okuthile okungenza kube ngcono kubantu abathile. Ama-lens angagqoke ngeso elilodwa noma kokubili amehlo, futhi amathrekhi atholakala kumagenta, pink, violet, yellow, aqua, orange kanye green. Ngo-2001, abaphenyi bahlola lolu hlelo ngeziguli ezingu-14 ezingenambala.
Ama-lens awagcini nje ekunciphiseni amaphutha okubona umbala kodwa futhi enza labo bazalwane bazizwe ukuthi bavuselele ukuqonda kombala okuzithobayo nokusebenza okuthuthukisiwe emisebenzini yansuku zonke edinga ukuqonda kombala.
Kubalulekile ukuveza ukuthi lezi lens azibuyiseli umbala wombala ophelele nganoma yiziphi izindlela kodwa kunalokho zivumela abantu ukuba bahlukanise imibala esekelwe eminye imibala ekhanyayo nombala kunokuba kube nokucwaswa kombala weqiniso. Ngenkathi lezi ziguli zingakwazi ukuhlukanisa imibala ababenenkinga ngaphambili, ngezinye izikhathi amalensi adala izinkinga ezintsha namanye amabala wombala.
Umthombo:
I-Szczotka-Flynn, i-Loretta. Amalensi okuthintana amathrekhi wezokwelapha ezikhethekile. Xhumana ne-Lens Spectrum, Dec 2012, amakhasi 10-11.