题目内容

In the center of the macula is the

A. foveola
B. optic nerve
C. cone
D. vein

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The space between the back of the cornea and the front of the iris is

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

The diopter of lens is .

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

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