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Question 1

Watery fluid found between lens and cornea
▪ Similar to blood plasma
▪ Helps maintain intraocular pressure
▪ Provides nutrients for the lens and cornea
▪ Reabsorbed into venous blood through the scleral
venous sinus, or canal of Schlemm

Answer 1

Aqueous humor

Question 2

Gel-like substance posterior to the lens
▪ Prevents the eye from collapsing
▪ Helps maintain intraocular pressure

Answer 2

Vitreous humor

Question 3

Instrument used to illuminate the interior of the eyeball
and fundus (posterior wall)

Answer 3

Ophthalmoscope

Question 4

Light must be focused to a point on the retina for
optimal vision
▪ Light is bent, or refracted, by the cornea, aqueous
humor, lens, and vitreous humor

Answer 4

The eye is set for distant vision (over 20 feet away)
▪ Accommodation—the lens must change shape to
focus on closer objects (less than 20 feet away)