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• المقرر الدراسي: OPTO 321 - Binocular Vision I

 

All questions carry equal marks.
 
1)         All of the following are advantages of binocular vision Except
            A.  Spare Eye   B.  Stereopsis   C.  Better visual acuity   D.  Larger blind spot
 
2)         The left superior rectus moves the left eye up and out. Which extraocular muscle moves the right eye in the same direction (up and in)?
            A.  Right medial rectus   B.  Right inferior rectus   C.  Right inferior oblique
            D.  Right superior rectus
 
3)         All of the following would result in binocular stress Except:
            A.  Convergence problems   B.  Anisooxyopia    C.  Anisometropia    D.  Aniseikonia
 
4)         The third cranial nerve innervates all of the following extraocular muscles EXCEPT:
            A.  Superior rectus   B.  Inferior oblique   C.  Lateral rectus   D.  Medial rectus
 
5)         Binocular vision as defined by Worth can be classified into all of the following grades EXCEPT: 
            A.  Normal retinal correspondence   B.  Stereopsis   C.  Fusion   
D.  Simultaneous perception
 
 
 
 
Theory
 
1a)         Differentiate between the term ‘Associated Phoria’ and ‘Dissociated Phoria’
b)         Describe the term ‘Fixation Disparity’, differentiating it from the terms ‘Heterophoria’ and ‘Heterotropia’.
 
 
2)           When we say a person has gross stereopsis but not fine stereopsis. Explain what has happened on the retina to cause this situation.