ABO NOCE EXAM-QUESTIONS WITH
ANSWERS| 2026 | 100% Correct
What does the fibrous tunic consist of?
sclera and cornea
What does the vascular tunic consist of?
iris, ciliary body, choroid
What does the nervous tunic consist of?
retina (rods and cones)
Rods
Specialized visual receptors that play a key role in night vision and peripheral
vision.
Cones
retinal receptor cells that are concentrated near the center of the retina and that
function in daylight or in well-lit conditions. The cones detect fine detail and give
rise to color sensations.
Rods
do not discriminate between different colors of light
, Cones
do discriminate colors
Approximately how many rods spread towards the outside of the retina
120 million
Approximately how many cones are concentrated near the center of the
macula
6 million
Where is the highest concentration of cones
at the fovea which is the center of the macula
The macula
where light will focus in a healthy eye.
optic disc
Region at the back of the eye where the optic nerve meets the retina. It is the blind
spot of the eye because it contains only nerve fibers, no rods or cones, and is thus
insensitive to light.
How many fluid filled chambers does the eye have
3
ANSWERS| 2026 | 100% Correct
What does the fibrous tunic consist of?
sclera and cornea
What does the vascular tunic consist of?
iris, ciliary body, choroid
What does the nervous tunic consist of?
retina (rods and cones)
Rods
Specialized visual receptors that play a key role in night vision and peripheral
vision.
Cones
retinal receptor cells that are concentrated near the center of the retina and that
function in daylight or in well-lit conditions. The cones detect fine detail and give
rise to color sensations.
Rods
do not discriminate between different colors of light
, Cones
do discriminate colors
Approximately how many rods spread towards the outside of the retina
120 million
Approximately how many cones are concentrated near the center of the
macula
6 million
Where is the highest concentration of cones
at the fovea which is the center of the macula
The macula
where light will focus in a healthy eye.
optic disc
Region at the back of the eye where the optic nerve meets the retina. It is the blind
spot of the eye because it contains only nerve fibers, no rods or cones, and is thus
insensitive to light.
How many fluid filled chambers does the eye have
3
