FreeVisionTest.com

Online Written Tests
Take this 10 question online test about hearing-related information provided by Dr. Ted Montgomery. How much do you really know about vision? Also consider this test a learning experience. We'll let you know how you did and what the correct answers are.

Quiz #1

1.	What is the primary (most powerful) focusing structure of the eye?
	cornea pupil iris crystalline lens

2.	Which type of photoreceptor is most sensitive to bright light and color?
	iodopsin rhodopsin cone rod

3.	The vitreous humor, which occupies about 80% of the eye’s interior, is composed mostly of what?
	inorganic salts water hyaluronic acid collagen fibrils

4.	A “cataract” is an opacification of which eye structure?
	cornea conjunctiva iris crystalline lens

5.	Which eye structure determines a person’s eye color?
	cornea conjunctiva iris crystalline lens

6.	In which eye disorder does too much intraocular pressure damage optic nerve fibers?
	blind spot optic neuritis papilledema glaucoma

7.	Which eye structure is comparable to the film of a camera because it senses light focused on it?
	pupil vitreous humor retina optic nerve head

8.	“Pink eye” is an inflammation of which eye tissue?
	cornea conjunctiva iris crystalline lens

9.	Which cranial nerve innervates four of the six extraocular muscles (medial rectus, superior rectus, inferior rectus, and inferior oblique)?
	cranial nerve II cranial nerve III cranial nerve IV cranial nerve VI

10.	What is the point of sharpest, most acute visual acuity within the eye?
	fovea centralis macula retina optic disk

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