Ubuchwepheshe bokushintsha i-Q bungobunye bobuchwepheshe obuyisisekelo bama-laser anamandla aphezulu.Kuwubuchwepheshe obukhethekile bokwandisa amandla okushaya kwenhliziyo ngokucindezela ububanzi be-laser.Kuma-lasers wesimo esiqinile se-pulsed evame ukusetshenziswa, ngemva kokusebenzisa ubuchwepheshe obushintshwayo be-Q, ububanzi besikhathi sokushaywa kwe-laser okukhiphayo bungacindezelwa bube kokukodwa kwezinkulungwane eziyishumi, futhi amandla aphezulu anganyuswa abe ngaphezu kwezikhathi eziyinkulungwane.Ngakho-ke, yiziphi izinkinga ze-pigmentation i-Q-switched laser ehamba phambili kuzo?
I-Laser eshintshwayo ye-Q ikakhulukazi isebenzisa umphumela okhethiwe we-photothermal we-laser wavelength.Ngokukhetha ama-lasers anamaza ahlukene obude, ububanzi be-pulse, kanye nokuminyana kwamandla, ukwelashwa okuhlosiwe kungakhomba ukuqhuma kwezinhlayiya ze-pigment ngaphandle kokulimaza izicubu ezizungezile ezijwayelekile ukuze kuzuze umphumela wokwelapha.Ngakho-ke, i-laser eshintshwayo ye-Q isetshenziselwa ikakhulukazi ukuqeda izilonda zesikhumba ezinemibala, umbala obangelwa ukuxutshwa kombala, kanye nemibala ebuhlungu.Imibala yangaphandle, i-epidermal kanye ne-dermal pigments inomphumela ongcono.
Ota imvukuzane
Imvukuzane ye-Ota iyisilonda esimpunga esisasibhakabhaka esachazwa okokuqala ngu-Ota ngo-1936 futhi sasakazekela ekusakazweni kwenzwa ye-trigeminal ku-sclera kanye nohlangothi lwe-ipsilateral.Ngokuvamile kwenzeka kumajwabu amehlo angaphezulu nangaphansi, ulwanga, kanye nohlangothi lwesikhashana lobuso, futhi ngezikhathi ezithile kuzo zombili izinhlangothi.Cishe izingxenye ezimbili kwezintathu zeziguli zine-ipsilateral scleral blue staining.Izilonda ngokuvamile ziba namapheshana, futhi umbala ungaba nsundu, o-turquoise, oluhlaza okwesibhakabhaka, omnyama noma onsomi.Izinguquko ze-pathological yilezi: ama-melanocyte aphakathi kwe-collagen fibers of the dermis layer, futhi awasoze ahlehla, okuthinta kakhulu ukubukeka.
Umgomo oyisisekelo wokwelashwa kwe-laser eshintshiwe nge-Q yemvukuzane ye-Ota ukuthi ubude beza beza bayo obuthile bamandla e-laser bumuncwa ngokukhetha i-melanin ejulile kudermis, futhi isici sayo esifushane sobubanzi bokushaya kwenhliziyo sikhawulela amandla e-laser ezilonda zesikhumba.Le mingcele iyasebenza Inhlanganisela ingenza i-laser ibhubhise ngokukhetha izinhlayiya ze-melanin nama-melanocyte e-dermal, iwaphule abe yizinhlayiya, futhi i-phagocytosed ngama-phagocytes, futhi ukulimala kwezicubu ezivamile cishe ku-zero.
Ulwazi olungenhla luhlinzekwa Umkhiqizi Welaser Oshintshiwe we-ND YAG
Isikhathi sokuthumela: Nov-24-2021