Izinhlobo ze-Cataracts

Funda Ngezinhlobo Eziningi Zama-Cataracts

Nakuba wonke ama- cataracts ahilela ukuguqula ilensi yeso , kunezinhlobo eziningana ze-cataracts ezikhona. Ama-cataract angathuthuka ngenxa yokuguga noma angase avele empilweni. Izingxenye ezahlukene zelensi zingathinteka ngaphezu kwamanye. Odokotela bamaziso bahlukanisa izidakamizwa ngokusho kwendawo kanye nemvelaphi yabo.

Izinhlobo ze-Cataracts ngendawo

Ama-cataracts ahlukaniswa odokotela ngokusho kwendawo yokuvula, noma i-clouding, ye-lens.

I-Nuclear Sclerotic Cataract

I-cataract ye-nuclear nyukliya iyona uhlobo oluvame kakhulu lwe-cataract ehlobene neminyaka. Loluhlobo lwe-cataract lubangela ukukhanya okuphuzi okwesibhakabhaka nokuqina kanzima ingxenye yamalensi okuthiwa i-nucleus. Izinguquko embonweni ivame ukuhamba kancane.

Kwezinye izimo, iziguli zingase zibone ukuthuthukiswa kwangempela embonweni oseduze ngaphambi kokuba umbono wabo uhlasele ngokwezinga elikhulu. Ebizwa ngokuthi " okwesibili ukubona ," lesi sigaba ngokuvamile sesikhashana kuphela.

I-Cataract yeCortical

I- cataract ye-cortical ibonakala sengathi i-opacity eguquguqukayo engxenyeni ye-lens ebizwa nge-cortex. I-cortex iqukethe i-peripheral, noma ingxenye engaphandle, ye-lens. Lezi zinambuzane zivame ukufana nezikhulumi zamasondo ezikhomba ngaphakathi phakathi nendawo ye-lens. Ukukhanya kuvame ukusabalalisa uma kushaya ama-opacities afana nokukhuluma.

I-Cataract ye-Posterior Subcapsular

Ngokuvamile okubizwa ngokuthi i-PSC, i-cataract posterior sub postsular is a opacity eqala phezu kwendawo yangemuva kwe-lens, ngqo ngaphansi kwesikhwama se-lens caspsular esinezindlu zensimbi.

Loluhlobo lwe-cataract lubangela ukuzwela okukhanyayo, okufifiwe eduze kwombono, ne-glare ne-halos ezungeze izibani. Zivame kakhulu ezigulini zesifo sikashukela kanye neziguli ezithathe ama-sterode isikhathi eside.

Izinhlobo ze-Cataracts ngesiqalo

Odokotela bamehlo bahlukanisa izidakamizwa ngokwemvelaphi yabo.

Cataract ehlobene nobudala

Iningi lezinkinga zithuthuka njengoba sikhula. Nakuba izibonakaliso zingabonakala uma usu-40s kuya kuma-50, ama-cataract ngokuvamile awaqali kuze kube sekupheleni kweminyaka engu-60 noma engu-70.

I-Cataract yesibili

Ngezinye izikhathi i-cataracts ikhula ngemva kokuhlinzwa kwamehlo, njengokuhlinzwa kwe- glaucoma noma ukuhlinzwa okubuyiselwayo. Iziguli ezinesifo sikashukela ngezinye izikhathi zihlakulela i-cataracts ngaphambi kokujwayelekile. Kanti futhi, iziguli ezithatha i-steroids isikhathi esithile zingase zenze i-cataracts.

Cataract ebulalayo

Ngezinye izikhathi i-cataracts ibangelwa ukulimala okuqondile noma ukulimala iso. Izidakamizwa zingase zithuthuke masinyane noma ngemva kweminyaka emcimbi olimaza iso. I-cataract ehlukumezayo ivele ivele ngemva kokuhlukumezeka okungafanele emehlweni noma ekuchasheni kwamakhemikhali athile.

Cataract Congenital

Ezinye izingane zizalwa zine-cataracts. Kwezinye izimo, i-cataract ezuzwe njengefa ayibalulekile ngokwanele ukuze ithinte umbono. Uma kubalulekile, noma kunjalo, i-cataract kufanele isuswe ukuze igweme izinkinga zombono, njenge- strabismus noma i- amblyopia .

I-Cataract yomsindo

Nakuba kungavamile, i-cataracts ngezinye izikhathi yakha emva kokuvezwa kwezinye izinhlobo zemisebe. Loluhlobo lwe-cataract lungabangelwa ekukhanyiseni ukukhanya kwe-ultraviolet kusuka elangeni nakwezinye izinhlobo zemisebe.

_Umthombo:

_{Association American Optometric. "Umhlahlandlela Wokusebenza Ngokwemitholampilo: Ukunakekelwa Isiguli Esidala Nge-Cataract." Association American Optometric, 1995.}