2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cycloplegic refraction yog txheej txheem siv los txiav txim siab ib tus neeg qhov ua tiav refractive yuam kev los ntawm kev so ib ntus cov leeg uas pab ua kom pom qhov muag. Cycloplegic qhov muag tee yog siv los so ib ntus ntawm lub cev ciliary, lossis tsom cov leeg, ntawm ob lub qhov muag.
Thaum twg yuav tsum ua qhov Cycloplegic refraction?
Thaum siv tshuaj cycloplegic
Yuav tsum tau kho kom haum rau ntawm lub hom phiaj, eg 6m lossis tshaj, xws li qhov chaw so. Thaum qhov kev pab cuam tshwm sim thaum lub hom phiaj (retinoscopy) los yog cov ntsiab lus refraction, qhov no yuav ua rau muaj qhov tshwm sim ntawm myopic lossis hauv qab hypermetropic tshwm sim.
Leej twg xav tau Cycloplegic refraction?
Cov menyuam yaus nrog >3.50ds ntawm hypermetropia muaj 13 npaug ntawm kev pheej hmoo ntau dua ntawm kev tsim cov strabismus lossis amblyopia. Esotropia. Qhov pib tshiab ntawm / yav dhau los tswj tau zoo esotrope yog ib qho qhia rau cycloplegic refraction. Qhov no tso cai rau peb los txiav txim seb qhov muag tig puas muaj cov khoom haum.
Vim li cas thiaj tsim nyog refraction?
Refraction qee zaum tsim nyog nyob ntawm tus neeg mob qhov kev kuaj mob thiab / lossis cov lus tsis txaus siab tau nthuav tawm. Piv txwv li, yog tias tus neeg mob tab tom pom qhov muag tsis pom kev lossis txo qhov pom ntawm qhov muag ntawm daim ntawv qhia qhov muag, yuav tsum muaj kev cuam tshuam los saib seb qhov no yog vim xav tau tsom iav lossis vim muaj teeb meem kho mob.
Vim li cas cov kws kho qhov muag ua qhov muag tsis pom kev?
Visionkev tshuaj ntsuam
Lawv kuj tseem yuav ua qhov kev ntsuam xyuas refraction. Lub hom phiaj ntawm qhov kev sim no yog txhawm rau txiav txim siab seb lub teeb khoov puas yog thaum nws dhau los ntawm koj lub lens lossis yog tias koj muaj qhov tsis txaus ntseeg, xws li ze ze.
Pom zoo:
Puas yog txhua tus mydriatics tseem yog cycloplegic?
Tag nrho cov cycloplegics kuj yog mydriatic (cov tub ntxhais kawm dilating) cov neeg ua haujlwm thiab siv xws li thaum kuaj qhov muag kom pom kev zoo dua ntawm retina. Qhov twg mydriatic tsis tsim cycloplegia? Phenylephrine yog cov tshuaj siv ntau tshaj plaws hauv pawg no.
In refraction los ntawm rarer mus rau denser nruab nrab?
Thaum nthwv dej taug kev los ntawm qhov ntom ntom mus rau qhov nruab nrab tsis tshua muaj nws khoov deb ntawm qhov qubthiab lub kaum sab xis ntawm qhov cuam tshuam ntau dua li kaum ntawm qhov xwm txheej. Thaum nthwv dej taug kev los ntawm qhov tsis tshua muaj mus rau qhov nruab nrab qhov nruab nrab lub refracted rays khoov ntawm qhov qub thiab lub kaum sab xis ntawm refraction tsawg dua lub kaum sab xis ntawm qhov xwm txheej.
Puas yog phenylephrine yog cycloplegic?
Phenylephrine yog sympathomimetic tus neeg sawv cev uas yog siv los kho cov iris yam tsis muaj cycloplegia cycloplegia Cycloplegic tshuaj feem ntau yog muscarinic receptor blockers. Cov no suav nrog atropine, cyclopentolate, homatropine, scopolamine thiab tropicamide.
Ib qho ntawm cov hauv qab no yog tus neeg sawv cev cycloplegic?
Cycloplegic tshuaj feem ntau yog muscarinic receptor muscarinic receptor Cov tshuaj nrog muscarinic antagonist kev ua haujlwm tau dav siv hauv cov tshuaj, hauv kev kho mob plawv qis, zais zis ntau dhau, teeb meem ua pa xws li mob hawb pob thiab COPD, thiab cov teeb meem neurological xws li Parkinson's disease.
Vim li cas refraction tshwm sim?
Refraction yog ib qho tshwm sim thaum lub teeb nthwv dej, tshwm sim ntawm lub kaum sab xis ntawm qhov qub, hla ib thaj tsam ntawm ib qho nruab nrab mus rau lwm qhov uas muaj qhov hloov pauv ntawm lub teeb. Lub teeb yog refracted thaum nws hla lub interface ntawm huab cua mus rau hauv iav uas nws txav tau qeeb dua.
