Amalensi we-myopia kubantu abadala

I-Myopia ithinta kokubili izingane kanye nabantu abadala. Isizathu sombono ongaqondakali wezinto ezikude neso ukuphulwa kokugxila kwemisebe yokukhanya ku-retina (ngenxa yamandla aphezulu aphikisayo wezinto ezibonakalayo).

Kubantu abanempilo, imisebe yokukhanya eyenza isithombe igxile enkabeni ye-retina, nakubantu be-myopic, phambi kwayo. Lokhu kungenxa yokuthi i-cornea ene-lens isusa imisebe ngaphezu kokudingekile. I-Pathology ingaba yokuzalwa noma ifomu ngesikhathi sokuphila (ikhula kancane noma ngokushesha ngokwanele).

Nge-myopia, usayizi we-eyeball ungase ube mkhulu kunokuvamile, bese kwakhiwa okuthiwa i-axial myopia. Uma i-pathology ihlotshaniswa nomsebenzi owandayo wengxenye yeso ekhanyisa ukukhanya, lokhu kuyifomu eliphikisayo.

Ngokusho kobunzima zihlukaniswa:

• izinga elibuthakathaka le-myopia - kufika ku-3 diopters;
• okuphakathi - kusuka ku-3,25 kuya ku-6,0 diopters;
• esindayo - ezingaphezu kuka-6 diopters.

Kungenzeka yini ukugqoka amalensi nge-myopia

Ukulungisa ilensi kusetshenziselwa ukuthuthukisa umbono kunoma yiliphi izinga lokonakala. Kubandakanya i-myopia. Inhloso eyinhloko yokusebenzisa ama-lens ukunciphisa amandla e-refractive endaweni ye-optical yeso, ugxilise isithombe esiphakathi nendawo ye-retina.

Uyini umehluko phakathi kwamalensi e-myopia namalensi ajwayelekile?

Ukulungisa umbono ku-myopia, odokotela bakhetha ama-minus lens. Le mikhiqizo inomumo we-concave, ekuphekeni kuboniswa uphawu "-". Ngezinga elibuthakathaka le-myopia, bayakwazi ukulungisa umbono ngo-100%; ngamadigri anzima, athuthukisa kakhulu umbono ngokunciphisa amandla aphikisayo ezinto ezisebenza ngokukhanya.

Kubalulekile ukuthi ama-diopters ama-lens (amandla awo optical) ahambisane ncamashi namandla aphikisayo wamehlo. Ngakho-ke, ukukhetha ama-lens kufanele kwenziwe kuphela ngemva kokuhlolwa okuphelele yi-ophthalmologist, ukuxilongwa kwezinsimbi. Udokotela uzobhala incwadi kadokotela yamalensi enazo zonke izici zomkhiqizo.

Ngaphezu kwenani lama-diopters, kubalulekile ukucabangela i-radius of curvature of contact lens. Kudingekile ukuthi uma igqoke, i-lens iphinda iphinda ngokuphelele ukuma kwe-cornea, ngaphandle kwalokho izohamba noma icindezele izicubu.

Ukugqoka induduzo nakho kubalulekile, ngakho-ke kufanelekile futhi kugxilwe ku-cornea kufanele kucatshangelwe.

Kubalulekile ngokulinganayo ukukhetha izinto ezenziwe ngazo ama-lens. Ngokuzwela kwamehlo, kuyadingeka ukukhetha amamodeli athambile e-biocompatible abonwa kahle ngamehlo.

Imaphi ama-lens angcono kakhulu ku-myopia

Okokuqala, udinga ukunquma ukuthi yimaphi ama-lens asebenzayo ku-myopia - aqinile noma athambile.

Ngokuvamile, odokotela batusa imikhiqizo ethambile, kulula futhi kulula ukuyisebenzisa, cishe ayizwakali emehlweni. Zingenziwa nge-hydrogel noma i-silicone hydrogel.

Ama-lens aqinile angasetshenziswa ezimweni lapho i-myopia yaba umphumela wokwakheka kwe-keratoconus noma ezinye izifo ze-analyzer ebonakalayo (ukukhubazeka kwe-corneal). Ziminyene ngesakhiwo, azilahlekelwa ukuma kwazo lapho zigqokile.

Ngokweshejuli yokushintshwa, amalensi alahlwayo afaneleka kakhulu futhi aphephe. Emini, ama-deposit ahlukahlukene awanaso isikhathi sokuqongelela phezu kwama-lens nama-microorganisms asongela ukucasuka nokuvuvukala kwamehlo kwanda. Lawa ma-lens awadingi izixazululo zokunakekelwa okukhethekile, alahlwa ngemuva kokususwa.

Kukhona nama-lens ashintshayo ngemva kwesikhathi esithile - amaviki angu-2 - 4. Ashibhile, kodwa adinga ukuhlanzwa njalo nokubulala amagciwane.

Ukubuyekezwa kodokotela mayelana namalensi e-myopia

"Ama-contact lens ayindlela enethezeke kakhulu yokulungisa i-myopia," kusho udokotela wamehlo u-Olga Gladkova. - Isiguli sithola umbono ocacile, insimu yokubuka ayinqunyelwe uhlaka lohlaka lombukiso. Amalensi akhululekile ukudlala imidlalo, ukushayela imoto. Kodwa lapho usebenza kukhompyutha isikhathi eside, okuthandayo kufanele kunikezwe izibuko, ngenxa yengozi eyengeziwe yokuthuthukisa i-eye syndrome "eyomile".

Imibuzo nezimpendulo ezidumile

Sikhulume nabo udokotela wamehlo u-Olga Gladkova mayelana nezinketho zokugqoka ama-lens we-myopia, ukuphikisana okungenzeka ekusebenziseni kwabo, ubude besikhathi sokugqoka kanye namanye ama-nuances.