RST 230: Final Exam Questions And Answers | 2025 Updated Solutions | 100% Correct Answers
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Course
RST 230
Institution
RST 230
Hearing impairment - ️️term used to describe all types of hearing loss, ranging from
very mild to profound deafness
Deafness - ️️state occurring when a person is unable to understand speech
through the ear alone, either with or without a hearing aid
Hard-of-hearing - ️️people who ha...
RST 230: Final Exam
Hearing impairment - ✔️✔️term used to describe all types of hearing loss, ranging from
very mild to profound deafness
Deafness - ✔️✔️state occurring when a person is unable to understand speech
through the ear alone, either with or without a hearing aid
Hard-of-hearing - ✔️✔️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 - ✔️✔️occurs before speech develops
-born w/ hearing loss or acquire hearing loss
Post-lingual - ✔️✔️happens after someone learns to speak
Tunnel Vision - ✔️✔️can only see straight; loss of peripheral vision
Peripheral Vision - ✔️✔️can see peripheral (sides) but can't see straight ahead
Ocular dominance - ✔️✔️tendency to prefer visual input from one eye or the other
-The Miles Test
Cataracts - ✔️✔️lens becomes milky or cloudy & the cloudiness distorts rays of light &
prevents light from being focused on the retina. Primary cause of blindness among older
adults
Symptoms: blurred vision, double vision, poor night vision, need for bright lights when
reading
Causes: Lack of oxygen -- disturbance in the nutrition of the lens, external forces, e.g.,
electrical shock, wounds or x-rays
Glaucoma - ✔️✔️caused by the increased pressure within the eyeball. A liquid builds
up & increases pressure within the eye -- increased pressure can damage the optic
nerve
Symptoms: Loss of peripheral vision, sensitivity to light/glare, problems with night vision,
blurred vision
Diabetic Retinopathy - ✔️✔️diabetes causes changes in blood vessels in the retina that
cause hemorrhaging. One of the most common causes of visual impairments/blindness
in the U.S.
Symptoms: spots floating in the visual field, blurred vision, poor night vision, vision loss
, Major Causes of Visual Impairments in General - ✔️✔️aging (#1), congenital (born w/
it), disease (ex. diabetes), accidents (flying metal/wood #1 cause), stupidity
Legally blind - ✔️✔️if his/her vision in the better eye, even with glasses or contact
lenses, is no better than 20/200 or if his/her visual field has a maximum diameter of 20
degrees
Visually Impaired/Partially Sighted - ✔️✔️A serious loss of vision that cannot be
corrected by medical or surgical procedures or with conventional eyeglasses.
Levels of Visual Impairment: Acuity - ✔️✔️describes the amount of detail an individual
sees compared to what a person with normal vision sees
-measured in terms of the 20/20 method
Levels of Visual Impairment: Visual Field - ✔️✔️includes the entire area that can be
seen at one time with the fixed eye. The normal field of vision is 170 degrees
Sighted guide technique - ✔️✔️-A blind person's right hand will grip your left elbow.
-Keep your arm close to your body.
-Blind person will travel half-step behind you.
-Keep the person aware of conditions or changes in the surroundings. Mention curbs,
steps, doorways, etc.
-When guiding a person who is blind to seat, simply place her hand on the back of the
chair and let her seat herself.
Conductive hearing loss causes - ✔️✔️ear canal most damaged, puncture to the
eardrum, otosclerosis (calcification & softening of 3 little bones in the ear)
sensorineural hearing loss - ✔️✔️happens in the inner ear, the most common form of
hearing loss, also called nerve deafness; caused by damage to the cochlea's receptor
cells or to the auditory nerves
Central hearing loss - ✔️✔️accidents, tumors,
happens in the hearing portions of the brain, the pathways to the brain of the brain itself
are damaged
Communication with people with hearing impairments - ✔️✔️-get their attention
-speak clearly and distinctly at a normal rate and volume
-be expressive
-prevent distractions
-position yourself
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