Vision test 3/6/25 Bugaytsova Rafaella

The eye acounts for what percentage of the environmental perception?

70%

The eyes are the most complex organs that you have except your?

BRAIN

Your eyes are composed of more than blank million working parts

2

The average person blinks how many times per min?

12 times per/min

How many times per day do we blink?

10,000

How many bits of information can your eyes process every hour?

36,000

What percent of your eyeball is exposed to the outside world

1/6

Is color blindness more likely in males or females and how many times more likely

males/ 10

The blank is the only part of the human body that can function at 100% ability at any moment

eye

Your eyelashes have an average life span of blank months

5

The eye can distinguish blank shades of the gray

500

People generally read blank slower from a computer screen than from paper

25%

Men are able to read blank print better than women can

fine

why do our nose get runny when we are crying

tears from the eye drain into the nose

Your eye will focus on about blank things per second

50

Your retina contains blank million rods and blank million cones

12;8

Your eye lid is comprised of? and it does what?

Epithelial tissue; protect the outermost layer of the eye

Conjunctive lines the what eye lid?

posterior/lines anterior surface of the eyeball

What is the clinical name for pink eye and what is it?

Conjunctivitis;bacterial infection

Lacrimal gland is superior or inferior to each eye?

Superiolateral

Lacrimal gland does what?

Secretes dilutes saline solution for lubrication

Is the eyeball hallow or dense?

hallow

Eyeball is filled with blank and blank which does what?

aqueous, vitreous humors; to maintain shape

Sclera is made of what

connective tissue

Sclear is less sensitive to touch because …

of low concentration os neurons

Cornea is the…

transparent window to eye

Cornea is where light passes through

to activate the nervous system

Cornea is sensitive because?

it is a defensive line loaded with neurons making it very sensitive

Iris is what part of the eye?

pigmented

Iris is a blank muscle

Involuntary

The iris acts as a diaphragm to

control light entering the middle and posterior eye

Pupil is what

nothing more than a opening or space into the eye ball appears as black

Lens is transparent structure in the eye and is used for what?

Can change shape to modify focus to see various distances.

Retina holds what?

photoreceptors

What do the rods do?

function in less intense light (night vision)/peripheral vision

What do the cones do?

responsible for color vision

Blue is what type of color vision?

short

Green is what type of color vision?

medium

Red is what type of color vision?

long

What does the optic nerve do?

connects retina to brain stem

What is colorblindness

inability or decreased ability to see color or perceive color differences

How does color blindness happen?

development of cones, travels on x chromosome

Who is more likely to get color blindness?

males

What is cataracts?

clouding that develops in the lens or in its envelope

How does cataracts start?

as simple as decreased clarity and may progress to blindness without treatment

What is Glaucoma?

When the optic nerve or retina is damaged due to increased pressure to the aqueous humor

Is Glaucoma permenant?

can permanently damage vision in the affected eye and lead to blindness if left untreated.

What is astigmatism?

vision condition that causes blurred vision and is very common

Why do astigmatisms occur?

irregular shape of the cornea or abnormal curvature of the lens