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Ophthalmology

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Question
23 out of 34
 

Anterior posterior stability of eye ball is maintain by all except? (AIIMS May 2009)



A Superior rectus

B Superior oblique

C Orbital Fat

D Suspensory ligament of the eye

Ans. B Superior Oblique

Ref: Duane’s clinical ophthalmology/Volume 2/ Chapter 21/ page no 10-18

1. The fascia around EOMS ectend to the orbital wall as Check Ligaments. The best developed check ligaments are those of medial and lateral rectus muscles. The lateral check ligament is strongest

2. The Superior rectus muscle sheath is joined anteriorly with that of LPS muscle by means of an Intramuscular fascia. The superior transverse ligament of Whitnall may serve as superior check ligament. (Option A),

3. The Inferior Oblique muscle travels underneath the Inferior Rectus muscle and their conjoint fascia form the Suspensory Lockwood Ligament (Option D), which support the globe in the orbit.

4. The Orbital structures are surrounded by the orbital fat, which provides an excellent cushion and support the globe.(Option C)

From the above discussion, it is clear that superior Oblique does not provide any support to the globe as it does not have any check ligament and therefore does not take part in the formation of the suspensory ligaments of the globe.

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