IInd OFISA Quiz

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Quiz
1. The safe needle entry point for inferolateral quadrant block   

Medial 2/3rd and Lateral 1/3rd of the orbital floor
Medial 1/3rd and Lateral 2/3rd of the orbital floor
Extreme inferolateral junction of the orbital wall
Just medial to Medial 2/3rd and Lateral 1/3rd of the orbital floor

2. Among the four orbital walls the thickest of all is:   



Lateral orbital wall
Roof

3. The extra ocular muscle that doesn’t originate from the orbital apex  

Inferior rectus
Inferior oblique
Superior rectus
Superior oblique

4. The orbital axis and visual axis diverge at an angle of   

900
450
230
1800

5. The volume of the eye ball  

3ml
6ml
9ml
12ml

6. The total volume of the orbit   

10ml
20ml
30ml
40ml

7. In a medial peribulbar block, which of the following statement is not correct:   

The block is usually administered using 26G ½ inch steel needle
It can be administered as a primary injection for high myope
The bevel of the needle should face the globe
The tip is passed in a blind pit between the medial caruncle and canthus

8. The use of cocaine as a topical anaesthetic agent for cataract surgery was first described by   
A. Anderson
Carl Koller
Knapp
9. The method of achieving oribcularis akinesia by blocking the facial nerve at the proximal trunk, just in front of the tragus of the ear over the condyloid process of the mandible is called   

Atkinson block
Van Lint Block
O’Brien block
Nadbath block

10. One of the following about the superior orbital fissure is false:   

It connects the middle cranial fossa with the orbital cavity
It lies between the roof and lateral walls of the orbit
The widest part of the fissure is at its medial end
It lies between the greater wing of the sphenoid and the maxilla