Extrinsic Muscle of the Eyeball

Question 1

OIAI of Obliquus Ventralis

Answer 1

O- Rostrolateral margin of palatine bone, adjacent to the suture between the palatine lacrimal and maxillary bone
I- Below the insertion of the Ventral Rectus
A- Rotate the eyeball
I- Oculomotor nerve

Question 2

OIAI of Obliquus Dorsalis/ Trochlearis

Answer 2

O- Medial border of the Optic Canal
I- Dorsomedial face of the periorbita to the medial canthus of the eye
A- Rotate the eyeball
I- Trochlear nerve

Question 3

OIAI of Rectus Dorsalis

Answer 3

O- Arises at the optic canal
I- Medial and Lateral Recti
A- Rotates the eyeball on vertical axis
I- Oculomotor nerve (Ventral, Medial, Dorsal) and Abducens nerve (Lateral)

Question 4

OIAI of Rectus Lateralis

Answer 4

O- Arises at the optic canal
I- Medial and Lateral Recti
A- Rotates the eyeball on vertical axis
I- Oculomotor nerve (Ventral, Medial, Dorsal) and Abducens nerve (Lateral)

Question 5

OIAI of Rectus Medialis

Answer 5

O- Arises at the optic canal
I- Dorsal and Ventral Recti
A- Rotates the eyeball horizontally
I- Oculomotor nerve (Ventral, Medial, Dorsal) and Abducens nerve (Lateral)

Question 6

OIAI of Rectus Ventralis

Answer 6

O- Arises at the optic canal
I- Dorsal and Ventral Recti
A- Rotates the eyeball horizontally
I- Oculomotor nerve (Ventral, Medial, Dorsal) and Abducens nerve (Lateral)

Question 7

OIAI of Retractor Bulbi

Answer 7

O- Arises deep on rectus muscles at the apex of the orbit
I- Equator of eyeball
A- Retract the eyeball and Aids in bringing oblique eye movement
I- Abducens nerve