Bofofu ba bosiu: ke eng, matšoao le kalafo

Litaba

• Matšoao le lisosa tse kholo
• Kalafo e etsoa joang

Bofofu ba bosiu, bo tsejoang e le nictalopia, ke bothata ba ho bona libakeng tse bobebe, joalo ka ha ho etsahala bosiu, ha ho le lefifi haholo. Leha ho le joalo, batho ba nang le bothata bona ba ka ba le pono e tloaelehileng motšehare.

Leha ho le joalo, bofofu ba bosiu ha se lefu, empa ke letšoao kapa bothata ba bothata bo bong, bo kang xerophthalmia, cataract, glaucoma kapa lefu la tsoekere retinopathy. Kahoo, ho bohlokoa kamehla ho buisana le ngaka ea mahlo ho lekola boteng ba lefu le leng la mahlo le ho qala kalafo e nepahetseng.

Kahoo, bofofu bosiu boa phekoleha, ho latela sesosa sa bona, haholo ha kalafo e qalisoa kapele le molemong o nepahetseng.

Matšoao le lisosa tse kholo

Letšoao le ka sehloohong la bofofu ba bosiu ke bothata ba ho bona libakeng tse lefifi, haholo ha o tloha tikolohong e khanyang ho ea lefifing, joalo ka ha o kena ka tlung kapa ha letsatsi le likela, mohlala. Kahoo, batho ba nang le bofofu bo sa phekoleheng bosiu ba lokela ho qoba ho khanna qetellong ea motšehare kapa bosiu, ho netefatsa polokeho ea bona.

Bothata bona ba ho bona bo etsahala ha litekanyo tsa 'mala ka har'a li-retinal receptors, tse tsejoang ka hore ke rhodopsin, lia fokotseha, e leng se amang bokhoni ba leihlo la ho sebetsana le lintho ka khanya e tlase.

Hangata li-receptor tsena li angoa ke khaello ea vithamine A, e bakang xerophthalmia, empa e ka fetoloa maemong a mafu a mang a mahlo a kang glaucoma, retinopathy, myopia kapa retinitis pigmentosa, mohlala.

Ithute haholoanyane ka mokhoa oa ho khetholla le ho phekola xerophthalmia.

Kalafo e etsoa joang

Kalafo ea bofofu ba bosiu e latela sesosa se bakang liphetoho ho li-receptor tsa retina. Ka hona, tse ling tsa mekhoa e sebelisoang haholo li kenyelletsa:

• Likhalase le lilense tsa puisano: li sebelisoa haholo maemong a myopia ho ntlafatsa pono;
• Mahlo a mahlo: lumella ho laola khatello ea leihlo maemong a glaucoma, ho ntlafatsa matšoao;
• Lisebelisoa tsa Vithamine A.: li khothalletsoa maemong a xerophthalmia ka lebaka la khaello ea vithamine A;
• Phekolo: e sebelisoa haholo ho phekola lera la mahlo ho batho ba tsofetseng le ho ntlafatsa pono.

Ntle le moo, haeba ho ka fumanoa lefu lefe kapa lefe la mokokotlo, ngaka e ka laela liteko tse ling tse kang optical tomography kapa ultrasound ho netefatsa kalafo e ka nkang nako e telele.