- Source: Duction
A duction is an eye movement involving only one eye. There are generally six possible movements depending upon the eye's axis of rotation:
Abduction refers to the outward movement of an eye.
Adduction refers to the inward movement of an eye
Supraduction / sursumduction / elevation
Infraduction / deorsumduction / depression
Incycloduction / intorsion
Excycloduction / extorsion
Forced duction test
The forced duction test is performed in order to determine whether the absence of movement of the eye is due to a neurological disorder or a mechanical restriction.
The anesthetized conjunctiva is grasped with forceps and an attempt is made to move the eyeball in the direction where the movement is restricted. If a mechanical restriction is present, it will not be possible to induce a passive movement of the eyeball.
Notes
See also
Extraocular muscles
Eye examination
Vergence
Version (eye)
Kata Kunci Pencarian:
- Duction
- Duct
- Gartner's duct
- Lymph duct
- Mesonephric duct
- Cystic duct
- Thyroglossal duct
- Lactiferous duct
- Ducted fan
- Vitelline duct
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