8.1.5 Manages children at risk of developing an anomaly of BV

Question 1

What are the common risks for developing an anomaly of BV?

Answer 1

• Anisometropia
• High refractive error: >3.00 DS, >2.50DC (45% chance. If FH also, 86%)
• Abnormal OMB
• Positive Family History (25% chance)
• Low Birth Weight/Premature

Question 2

Which nerves innervate which muscles?

Answer 2

o Lateral Rectus: 6th Nerve (Abducens)
o Superior Oblique: 4th Nerve (trochlear)
o Superior Rectus, Inferior Rectus, Inferior Oblique, Medial Rectus: 3rd Nerve
(Oculomotor)

Question 3

What is the primary, secondary and tertiary functions of the EOMs?

Answer 3

LR: primary - abduction
MR: primary - adduction
SR: primary - elevation, secondary - intorsion, tertiary - adduction
IR: primary - depression, secondary - extorsion, tertiary - adduction
SO: primary - intorsion, secondary - depression, tertiary - abduction
IO: primary - extorsion, secondary - elevation, tertiary - abduction