Orthoptist (tus kws kho qhov muag lub ntsej muag) ua haujlwm rau tus menyuam lub qhov muag tsis pom kev, tom qab ntawd ob lub qhov muag tib lub sijhawm, ua tsaug rau kev tawm dag zog tshwj xeeb: qhov kev tawm dag zog tseem ceeb ntawm kev rov kho dua no yog ua raws kev ua si ntawm kev nrhiav thiab kho cov ntsiab lus. luminous nrog ib lub qhov muag, tom qab ntawd ob qho tib si. Orthoptist tseem tuaj yeem tso qhov sib txawv nyob rau hauv pem hauv ntej ntawm lub qhov muag txhawm rau txhawm rau txhawm rau duab thiab ua rau cov leeg oculomotor ua haujlwm nyuaj dua.

Tus kws kho mob pob txha tseem tuaj yeem cuam tshuam ntxiv hauv cov neeg laus, thaum rov tshwm sim ntawm qub los yog seem strabismus, piv txwv li: hauv qhov no, ntu ntawm kaum ob txog kaum tsib qhov kev kho orthoptic txhawm rau txhawb lub zeem muag ntawm ob lub qhov muag thiab kom lawv ua haujlwm hauv kev sib koom tes zam yog npaj tau yooj yim.

Thaum kawg, tus kws kho mob pob txha raug hu thaum muaj daim ntawv pov thawj tsis tu ncua (ob lub zeem muag) vim tias nws tsis tuaj yeem tiv taus txhua hnub. Txhawm rau pab cov duab ntawm lub qhov muag sab laug thiab lub qhov muag sab xis kom sib koom ua ke thaum cov leeg nqaij oculomotor hauv ib qho ntawm lub qhov muag tsis teb (nyob rau hauv cov xwm txheej ntawm kev mob paj hlwb hauv cov neeg laus, piv txwv li), Tus kws kho mob pob ntseg tuaj yeem siv cov yas yas pluaj, nyam rau lub tsom iav qhov muag thiab uas ua raws li prism, txhawm rau txhawm rau txhawm rau duab. Tom qab, hom kev kho no tuaj yeem suav nrog hauv lub lens.