Which of these is not refractive medium of the eye

Reference no: EM13158663

1. A person with 20/30 vision would
a.see exceptionally well
b.have slightly blurred vision
c.have average vision
d.see very poorly

2. Which of these structures contains the largerst number of cones?
a.lens
b.fovea centralis
c.iris
d.aqueous humor

3.Ringing in the ears (tinnitus) may indicate injury to which cranial nerve?
a.III
b.V
c.VII
d.X

4.The area of the retina of which there are no photoreceptors is the
a. fovea
b.cornea
c.pupil
d.retina

5.In the normal eye images are focused
a. on the retina
b.in front of the retina
c.behind the retina
d.on the optic nerve

6. Which of these is not refractive medium of the eye?
a.cornea
b.vitreus humor
c.lens
d.retina

7.Why do middle ear infections commonly follow a sore throat?
a.Both areas are contained within the oropharnyx
b.The mucosa of the throat is continous with the mucosa of the auditory tube and middle ear
c.Sneezing spreads bacteria from the throat into the cochlea of the ear
d.Rupture of the tympanic membrane allows fluid to drain from the mddle ear into the throat

Reference no: EM13158663

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