CH 8 - Eye Test - Anatomy

I can infer HIS condition is passed down through DNA and genetics. if a family member has color perception deficiency, it is more likely that you will have it too.

SEX LINKED ON THE X CHROMOSOME

Color blind male + color blind female = color blind female

Color blind male + normal female = color blind male

rods function w/ dim light and cones function w/ colors. There are red cones, green cones, and blue cones

Accommodation is when the lens changes shape to be able to focus. The muscle contracts and move he ciliary body in the eye which is the lens

It will increase, because your lens is deteriorating

Working on the computer, playing sports

Basketball, Driving, Teaching, Lifeguarding

You would have difficulty knowing exactly how far away from something to stop

attaches lens to the ciliary body

found beneath the anterior sclera

ability to see dim light

found throughout the retina except for the very center or fovea

ability to see color

found in the retina, fovea centralis

contains cones, point of sharpest vision

Protects, moistens, and lubricates the eye
Empties into the nasal cavity

dilute salt solutions, mucus, antibodies, lysozyme

enzyme that kills bacteria

tough and protective outside later of the eye

blood vessels, middle layer of the eye

receptors --> transmit, inside layer

uneven curvature of the cornea & lens

(normal vision) eye focuses images correctly on the retina

(near sighted) distant objects appear blurry, light from these objects fails to reach the retina & are focused in front of it

far sighted

impaired vision as a result of aging (farsightedness)

inhibited rod function that hinders the ability to see at night

genetic conditions that result in the inability to see certain colors

SEX LINKED - ON X CHROM.

Drainage of aqueous humor is blocked, fluid backs up like a clogged sink. Pressure w/in the eye may increase to dangerous levels and compress the delicate retina and optic nerve.

- "vision going gray"

- Eventually causes pain and possibly blindness unless detected early.

- common cause of blindness in elderly

when the eyes are suddenly exposed to bright light, the pupils immediately constrict

pupils constrict when viewing close objects

unequal curvatures in different parts of the cornea or lens

is the closet point that the eye is capable of focusing an image on the retina. It will increase because our lens in our eyes becomes less flexible, making it harder to focus on objects closer to us.

the light refraction from the lens to not focus the focal point on the retina. This either makes images that are far away or close to the eye harder to see or blurry. this can be caused by a misshapen eye or lens.