ORBIT MCQ1

1.Which bone does not form medial wall of orbit

1. maxillary

2. lacrimal

3. ethmoid

4. sphenoid

5. frontal

2.       Most common cause of adult unilateral proptosis

a.     Thyroid orbitopathy

b.       Metastasis

c.       Lymphoma

d.       Meningioma

e.       Orbital cellulitis

3.       Evisceration is:

a.       Excision of the entire eyeball

b.     Excision of all the inner contents of the eyeball including the uveal tissue

c.       Photocoagulation of the retina

d.       Removal of orbit contents

                                 e.       Removal of periosteum 

4.       Lagophthalmos can occur in all of the following except;

a.       7th  cranial nerve paralysis

b.     5th  cranial nerve paralysis

c.       Thyrotoxic exophthalmos

d.       Symblepharon

e.       None of above

5.       Ultrasonography is helpful in confirming the diagnosis of:

a.     Thyroid ophthalmopathy

b.       Retinitis pigmentosa

c.       Subluxated clear crystalline lens

d.       Central retinal vein occlusion

e.       Corneal ulcer

6.       The most important symptom differentiating orbital cellulitis from panophthalmitis is:

a.     Vision

b.       Pain

c.       Redness

d.       Swelling

e.       None of above

7.       Axial proptosis can be due to either of these except:

a.       Optic nerve glioma.

b.     Lacrimal gland tumour.

c.       Orbital cellulitis,

d.       Thyrotoxicosis

e.       Optic nerve meningioma

8.       The commonest cause of bilateral proptosis is:

a.       Orbital cellulitis.

b.       Dysthyroid ophthalmopathy.

c.       Orbital emphysema.

d.       Cavernous sinus thrombosis,

e.       Optic nerve meningioma

9.       The most common cause of unilateral proptosis in adult is;

a.       lacrimal gland tumours

b.       orbital cellulitis

c.       panophthalmitis

d.       thyroid eye  diseases

e.       cavernous hemangioma

10.       Proptosis is present in the following condition except:

a.     Horner's syndrome

b.       Orbital cellulitis

c.       Thyroid ophthalmopathy

d.       Cavernous sinus thrombosis

                                e.        Optic nerve meningioma