题目内容

The diopter of lens is .

A. 20
B. 43
C. 45
D. 19

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The space between the back of the lens and the front of the retina is called the

A. the posterior chamber
B. vitreous
C. the anterior chamber
D. chamber angle

The orbit is consisted of bones:

A. 5
B. 8
C. 7
D. 6

In each orbit, the lateral and medial walls form an angle of degrees

A. 45
B. 30
C. 60
D. 25

There are extraocular muscles in each eye

A. 6
B. 4
C. 5
D. 8