Qhov sib txawv tseem ceeb ntawm hydrodissection thiab hydrodelineation yog qhov hydrodissection tshwm sim ntawm lub lens capsule thiab lens cortex, thaum hydrodelineation tshwm sim ntawm endonucleus thiab epinucleus.
Kev phais kab mob cataract yog ua los txhawm rau kho qhov pom ntawm cov neeg mob uas muaj huab tsis pom kev los ntawm cov kab mob cataracts. Phacoemulsification yog cov txheej txheem feem ntau siv hauv kev phais mob cataract. Thaum lub sijhawm ua haujlwm no, ib qho kev sojntsuam me me tau muab tso rau hauv lub qhov muag. Cov cuab yeej no feem ntau emits ultrasound nthwv dej, uas muag muag thiab tawg lub lens kom tshem tawm los ntawm kev nqus. Qhov no tseem hu ua me me incision cataract phais. Hydrodissection thiab hydrodelineation yog ob txoj hauv kev tseem ceeb uas yooj yim pab phacoemulsification.
Hydrodissection yog dab tsi?
Hydrodissection yog ib qho txheej txheem siv thaum phais mob cataract qhov twg lub lens capsule cais tawm ntawm lub lens cortex nrog kev siv cov ntsev sib npaug. Nws yog ua los ntawm cov tshuaj ntsiav thiab cataract cortex nyob rau hauv lub qhov muag kom dawb lub adhesions ntawm cataract los ntawm lub hnab capsular. Qhov no tso cai rau nws tig tag nrho. Hydrodissection yog ua tom qab tsim cov capsulorhexis. Thaum lub sij hawm tus txheej txheem, ib tug cannula uas muaj ib tug balanced ntsev tov yog muab tso rau hauv lub qhov muag, ncaj qha los ntawm lub ntsiab incision. Nws yog maj mam muab tso rau hauv lub anterior capsule, thiab qhov no txav mus rau pem hauv ntej, kom ntseeg tau qhov pom ntawm lub taub. Lub anterior capsule yog lifted maj mam thaum lub cannula taw tes rau lub lens ntawm txoj kab nruab nrab kom zoo zoo yam tsis muaj kev puas tsuaj rau zonules thiab punncturing lub capsule. Ib qho qeeb thiab tsis tu ncua ntawm cov ntsev tov ua rau cov dej nthwv dej, tshem tawm lub cortex los ntawm cov tshuaj ntsiav tom qab. Cov dej nthwv dej no ua rau lub qhov txhab ntawm lub lens nce siab los ntawm lub siab tsim los ntawm cov dej ntsev. Lub hauv paus ntawm lub lens yog kev nyuaj siab ua tib zoo nrog lub cannula. Qhov no ua rau cov kua ntws tawm kom khiav tawm thiab cuam tshuam equatorial cortical-capsular adhesions.
Feem ntau, kev ua tiav hydrodissection yog ua thaum lub nucleus tig tau yooj yim los ntawm cannula. Thaum cov txheej txheem no ua tau zoo, lub lens yog lub xov tooj ntawm tes thiab tau muab cais tawm ntawm cov tshuaj ntsiav ib puag ncig. Qhov no ua kom yooj yim tshem tawm thaum lub sij hawm phacoemulsification. Ib qho zoo hydrodissection kuj tso cai rau ib qho yooj yim cortical clean-up, txo qhov kev pheej hmoo ntawm capsular rupture thaum lub sij hawm tus txheej txheem ntawm cortical extraction.
Hydrodelineation yog dab tsi?
Hydrodelineation yog txheej txheem siv hauv kev phais mob cataract kom cais cov epinuclear sab nraud ntawm lub hauv paus endonucleus. Nws kuj tseem ua tau tom qab tsim cov capsulorhexis. Lub hauv paus endonucleus muaj qhov ntom ntom dua li lub plhaub epinuclear sab nraud; yog li ntawd, nws yuav tsum muaj ntau dua ntawm lub zog ntawm ultrasound kom tshem tawm.
Thaum cov txheej txheem no, cov canula tau muab tso rau hauv lub hauv paus thiab tso rau hauv qab thiab xa mus rau lub dav hlau hauv nruab nrab kom txog thaum lub nucleus pib txav mus. Thaum lub nucleus txav mus, qhov endonucleus pom. Lub cannula ncaj qha mus rau endonucleus, thiab cov kua ntsev sib npaug yog maj mam thiab tsis tu ncua txhaj rau ntawm txoj kev. Cov kua dej feem ntau ua raws txoj hauv kev uas muaj qhov tsis zoo tshaj plaws, tshem tawm cov epinucleus los ntawm endonucleus. Kev ua tiav ua tiav hydrodelineation muab lub nplhaib kub lossis lub voj voog tsaus nti ncig lub endonucleus. Qhov no qhia tau hais tias ib ncig ntawm lub nucleus division. Lub hom phiaj tseem ceeb ntawm cov txheej txheem no yog kev saib xyuas ib ntus ntawm epinuclear plhaub, uas ua raws li lub tsho tiv thaiv. Qhov seem ntawm lub plhaub epinuclear khaws lub capsule stretched, tiv thaiv nws los ntawm tearing.
Dab tsi yog qhov zoo sib xws ntawm Hydrodissection thiab Hydrodelineation?
- Hydrodissection thiab hydrodelineation yog cov txheej txheem tseem ceeb siv hauv kev phais mob cataract.
- Ob leeg ua tiav tom qab tsim cov tshuaj capsulorhexis.
- Ob leeg xav tau lub cannula uas muaj cov tshuaj ntsev sib npaug.
- Lawv yog cov txheej txheem phacoemulsification uas siv ultrasound.
- Lub cannula nrog cov kua ntsev sib npaug yog coj mus rau lub dav hlau hauv nruab nrab hauv ob qho xwm txheej.
Qhov txawv ntawm Hydrodissection thiab Hydrodelineation yog dab tsi?
Y Hydrodissection yuav siv qhov chaw ntawm lub lens capsule thiab lens cortex, whereas hydrodelineation tshwm sim ntawm endonucleus thiab epinucleus. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm hydrodissection thiab hydrodelineation. Hydrodissection yog cov txheej txheem siv los cais lub lens capsule los ntawm lub lens cortex, thaum hydrodelineation yog cov txheej txheem siv los cais lub plhaub sab nrauv ntawm lub hauv nruab nrab endonucleus. Tsis tas li ntawd, lub hom phiaj tseem ceeb ntawm hydrodissection yog tshem tawm cov kev sib txuas nruj ntawm sab hauv ntawm lub lens capsule thiab txheej txheej cortical ntawm lub lens. Lub hom phiaj ntawm hydrodelineation yog tswj lub plhaub epinuclear ib ntus.
Cov hauv qab no qhia txog qhov sib txawv ntawm hydrodissection thiab hydrodelineation hauv daim ntawv teev npe rau kev sib piv ntawm ib sab.
Summary – Hydrodissection vs Hydrodelineation
Phacoemulsification yog cov txheej txheem siv ntau tshaj plaws hauv kev phais mob cataract. Hydrodissection thiab hydrodelineation pab phacoemulsification yooj yim. Ob qho tib si txheej txheem muaj cov txheej txheem txhaj tshuaj siv lub cannula uas muaj cov kua ntsev sib npaug. Hydrodissection yog siv thaum phais cataract, qhov twg lub lens capsule cais los ntawm lub lens cortex. Lub nucleus rotating yooj yim los ntawm cannula yog ib qho cim ntawm kev ua tiav hydrodissection. Ntawm no, lub lens yog mobile thiab detached los ntawm ib puag ncig capsule. Hydrodelineation yog ib qho txheej txheem siv hauv kev phais mob cataract kom cais cov epinuclear sab nraud ntawm lub hauv paus endonucleus. Cov txheej txheem no muab lub nplhaib kub lossis lub voj voog tsaus nti nyob ib ncig ntawm lub endonucleus, uas qhia txog kev faib tawm ntawm cov nucleus. Yog li, qhov no qhia txog qhov sib txawv ntawm hydrodissection thiab hydrodelineation.
