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21 de jun. de 2013 · Ductions are monocular eye movements. Movement of the eye nasally is adduction; temporal movement is abduction. Elevation and depression of the eye are termed sursumduction (supraduction)...
- Orbital Cavernous Hemangioma
Orbital cavernous angiomas can increase intraorbital volume...
- Convergence
Convergence is the disconjugate adduction of the eyes for...
- Diplopia
Diplopia is the subjective complaint of seeing two images...
- Orbit Anatomy
The orbital process of the frontal bone and the lesser wing...
- Orbital Cavernous Hemangioma
ABduction: eye looks away from the nose. ADduction: eye looks towards the nose. Intorsion: top of the eye twists in towards the nose (e.g. while looking at R eye, it appears to turn clockwise) Extorsion: top of the eye twists away from the nose (e.g. while looking at R eye, it appears to turn counterclockwise)
30 de oct. de 2023 · Anatomy. The 4 extraocular muscles that control eye movement in the cardinal directions (along with their functions) are the superior rectus, inferior rectus, lateral rectus and medial rectus muscles. Extraocular muscles and orbit in a cadaver.
- Alice Ferng
- 7 min
- Content Manager
Abduction: Inferior oblique: Oculomotor nerve (inferior branch) Maxillary bone: Eye (posterior, inferior, lateral surface) Excyclotorsion: Elevation: Abduction: Levator palpebrae superioris: Oculomotor nerve: Sphenoid bone: Tarsal plate of upper eyelid: Elevation/retraction of the upper eyelid
2.1 Arterial Supply. 2.2 Venular Supply. 2.3 Applied Aspects. 3 Nerve Supply. 4 Origin of Extraocular Muscles. 4.1 Applied Anatomy. 5 Listing Plane and Fick’s Axis. 6 Description of Individual Muscles. 6.1 Medial Rectus (MR) 6.2 Lateral Rectus (LR) 6.3 Superior Rectus. 6.4 Inferior Rectus (IR) 6.5 Superior Oblique. 6.6 Inferior Oblique (IO)
By pulling the horizontal (lateral and medial) recti while holding longitudinal axis, students were shown the mechanism of eye abduction (A) and adduction (B), which is usually easy for students to understand.
Ductions refer to monocular movements of each eye. They include abduction, adduction, elevation (sursumduction), depression (deorsumduction), incycloduction or incyclotorsion, and excycloduction or excyclotorsion (see table on opposite page).