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Optician NAO Book 1 – Questions With Correct Solutions
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Optician NAO Book 1 – Questions With Correct Solutions
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Optician NAO Book 1 – Questions With CorrectSolutions
Medial retus muscle where is it? What does it do? Right Ans - Attached to
the inside front of the eyeglobe and the annulus of zinn at the back. It pulls the
top of the eye back and also towards the nose
Lateral retus muscle where is it? What does it do? Right Ans - Attached to
the outside front of the eyeglobe and the annulus of zinn at the back. It pulls
the outside of the front of the globe towards the back of the eye socket
Three positions of the eye Right Ans - * Primary position: looking straight
ahead
* Secondary position: looking exactly up and down vertically and horizontally
left or right
* Tertiary position: in between secondary position up and in and down or out
Difference between adduction and abduction Right Ans - Adduction:
rotation towards your nose
Abduction: rotation towards the temple
3 layers of tear film in order from outermost to innermost are _ , _ , and _
Right Ans - Lipid, aqueous and mucin
The layer of the tear film Thats responsible for the prevention of evaporation
is the _ layer Right Ans - Lipid
The layer of the tear film that contains nutrients and antibiotic properties is
the _ layer Right Ans - Aqueous
The layer of the tear film that holds tears on the cornea is the _ layer Right
Ans - Mucin
Which glands produce basic tear secretion Right Ans - Gland of wolfring
and gland of Kraus
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