RST 230 Exam 3 Study Guide Complete
Latest set with Questions and correct
Answers
legally blind - correct answer- ✅a person is legally blind if his/her vision in the better eye, even
with glasses, is no better than 20/200 or if his/her visual field has a maximum diameter of 20
degrees
Visually impaired/partially sighted - correct answer- ✅a serious loss that cannot be corrected
by medical or surgical procedures or with eyeglasses
Acuity - correct answer- ✅describes the amount of detail an individual sees compared to what
a person with normal vision sees
Visual Field - correct answer- ✅includes the entire area that can be seen at one time with the
fixed eye
Tunnel vision - correct answer- ✅when you can see straight ahead but cannot see to the side
Peripheral vision - correct answer- ✅when you can see the periphery but cannot see straight
ahead
Cataracts: Definition, symptoms, and causes - correct answer- ✅Definition: The lens becomes
milky or cloudy and this cloudiness distorts rays of light and prevents light from being focused
on the retina
Symptoms: Blurred vision, double vision, need for bright lights when reading
Causes: Lack of oxygen which leads to a disturbance of the nutrition of the lens; External forces
such as wounds, electric shock, or x-rays
Glaucoma: Definition, symptoms, and causes - correct answer- ✅Definition: Fluid builds up and
increases pressure within the eyeball and can damage the optic nerve
Symptoms: Loss of peripheral vision; sensitivity to light; blurred vision
Causes: Caused by increased pressure within the eyeball
Diabetic Retinopathy: Definition, symptoms, and causes - correct answer- ✅Definition:
Diabetes causes changes in blood vessels in the retina that cause hemorrhaging; one of the
most common visual impairments in the U.S.
Symptoms: Spots floating in the visual field; vision loss
, Causes: Diabetes
What are the major causes of visual impairments (in general)? - correct answer- ✅Aging,
congenital, disease, accidents
Sighted guide technique - correct answer- ✅Blind person's right hand will grip your left elbow;
the blind person will travel a half-step behind you
Hearing impairment - correct answer- ✅A general term used to describe all types of hearing
loss, ranging from very mild to profound deafness
Deafness - correct answer- ✅State occurring when a person is unable to understand speech
through the ear alone, either with or without a hearing aid
Hard of hearing - correct answer- ✅People who have mild to moderate hearing loss resulting in
decreased perception of conversational speech, but sufficient hearing to permit understanding
under optimal circumstances
Pre-lingual hearing loss - correct answer- ✅occurs before speech develops
Post-lingual hearing loss - correct answer- ✅occurs after speech has developed
Rh incompatibility (Rhesus Disease) - correct answer- ✅only occurs when the woman is Rh
negative and the man is RH positive and the child is RH positive; the woman creates antibodies
from the child's blood and kills the baby
Conductive hearing loss - correct answer- ✅Occurs in the outer or middle ear
The most common cause is the obstruction of the ear canal
Sensorineural hearing loss - correct answer- ✅Occurs in the inner ear and the cochlea
Causes can be from aging, viral infections, loud noises, and Rh incompatibility
Central hearing loss - correct answer- ✅Occurs in hearing portions of the brain
Caused when pathways to the brain or the brain are damaged
Communication with people with hearing impairments - correct answer- ✅Get their attention;
speak clearly at a normal rate and volume; be expressive; position yourself; prevent distractions
Working with a sign language interpreter - correct answer- ✅Look at and speak directly to the
person with ha; speak in first person; do not ask to be selective; be in sight of the interpreter and
person with ha; speak normally
What is autism and what are its symptoms? - correct answer- ✅A complex developmental
disability that involves a number of specific communication, social, and behavioral impairments
Latest set with Questions and correct
Answers
legally blind - correct answer- ✅a person is legally blind if his/her vision in the better eye, even
with glasses, is no better than 20/200 or if his/her visual field has a maximum diameter of 20
degrees
Visually impaired/partially sighted - correct answer- ✅a serious loss that cannot be corrected
by medical or surgical procedures or with eyeglasses
Acuity - correct answer- ✅describes the amount of detail an individual sees compared to what
a person with normal vision sees
Visual Field - correct answer- ✅includes the entire area that can be seen at one time with the
fixed eye
Tunnel vision - correct answer- ✅when you can see straight ahead but cannot see to the side
Peripheral vision - correct answer- ✅when you can see the periphery but cannot see straight
ahead
Cataracts: Definition, symptoms, and causes - correct answer- ✅Definition: The lens becomes
milky or cloudy and this cloudiness distorts rays of light and prevents light from being focused
on the retina
Symptoms: Blurred vision, double vision, need for bright lights when reading
Causes: Lack of oxygen which leads to a disturbance of the nutrition of the lens; External forces
such as wounds, electric shock, or x-rays
Glaucoma: Definition, symptoms, and causes - correct answer- ✅Definition: Fluid builds up and
increases pressure within the eyeball and can damage the optic nerve
Symptoms: Loss of peripheral vision; sensitivity to light; blurred vision
Causes: Caused by increased pressure within the eyeball
Diabetic Retinopathy: Definition, symptoms, and causes - correct answer- ✅Definition:
Diabetes causes changes in blood vessels in the retina that cause hemorrhaging; one of the
most common visual impairments in the U.S.
Symptoms: Spots floating in the visual field; vision loss
, Causes: Diabetes
What are the major causes of visual impairments (in general)? - correct answer- ✅Aging,
congenital, disease, accidents
Sighted guide technique - correct answer- ✅Blind person's right hand will grip your left elbow;
the blind person will travel a half-step behind you
Hearing impairment - correct answer- ✅A general term used to describe all types of hearing
loss, ranging from very mild to profound deafness
Deafness - correct answer- ✅State occurring when a person is unable to understand speech
through the ear alone, either with or without a hearing aid
Hard of hearing - correct answer- ✅People who have mild to moderate hearing loss resulting in
decreased perception of conversational speech, but sufficient hearing to permit understanding
under optimal circumstances
Pre-lingual hearing loss - correct answer- ✅occurs before speech develops
Post-lingual hearing loss - correct answer- ✅occurs after speech has developed
Rh incompatibility (Rhesus Disease) - correct answer- ✅only occurs when the woman is Rh
negative and the man is RH positive and the child is RH positive; the woman creates antibodies
from the child's blood and kills the baby
Conductive hearing loss - correct answer- ✅Occurs in the outer or middle ear
The most common cause is the obstruction of the ear canal
Sensorineural hearing loss - correct answer- ✅Occurs in the inner ear and the cochlea
Causes can be from aging, viral infections, loud noises, and Rh incompatibility
Central hearing loss - correct answer- ✅Occurs in hearing portions of the brain
Caused when pathways to the brain or the brain are damaged
Communication with people with hearing impairments - correct answer- ✅Get their attention;
speak clearly at a normal rate and volume; be expressive; position yourself; prevent distractions
Working with a sign language interpreter - correct answer- ✅Look at and speak directly to the
person with ha; speak in first person; do not ask to be selective; be in sight of the interpreter and
person with ha; speak normally
What is autism and what are its symptoms? - correct answer- ✅A complex developmental
disability that involves a number of specific communication, social, and behavioral impairments
