Domain 8: Use of senses

Question 1

what are components of visual efficiency without optical devices

Answer 1

sunglasses
lighting
night vision tech
long cane

Question 2

magnification

Answer 2

makes image larger
makes image closer
uses lenses

Question 3

magnification devices

Answer 3

handheld magnifiers
spectacles

Question 4

telescopes

Answer 4

higher the magnification the smaller the field
helps with distance viewing

Question 5

visual field enhancement

Answer 5

reverse telescopes
fresnal prism
mirror system

Question 6

localization

Answer 6

alignment of the eye or object
look for object without telescope and then with

Question 7

stabilization

Answer 7

steady balance and consistent grip which may require student to rest elbows on hard surfaces

can hold telescope on nose

provides student with best visual acuity

Question 8

focusing

Answer 8

turning the mechanism in direction that improves the image

once image starts to blur, refocus

Question 9

scanning

Answer 9

systematic
develop different patterns
horizontal to scan vertical objects
vertical to scal horizontal objects
practice locating large objects without a lot of visual clutter to start

Question 10

tracing

Answer 10

students view through telescope while moving their heads to trace along a stationary line
trace along lines (baseboards, grasslines)
outlines of furniture

Question 11

tracking

Answer 11

maintain consistent alignment of the eye and the object being viewed while the object is moving

easiest when looking at objects at a distance

as an object gets closer, acuity increases

Question 12

eccentric viewing

Answer 12

learner uses peripheral vision to look around a scotoma in central vision

learner determines necessary position of the eye so that the most acute peripheral vision to accommodate

Question 13

discrimination of touch

Answer 13

deep touch (awareness)
light touch
vibration
pain
temperature
two point

Question 14

using kinesthetic and proprioceptive info to make accurate turns

Answer 14

time and distance judgement
accurately determining direction and degree of turn

Question 15

echolocation

Answer 15

ability to hear and interpret sound waves and how to deflect objects

active: sound that we follow and track, sound that the traveler makes

passive: incidental echoes that help navigate

Question 16

factors that affect echolocation

Answer 16

thin objects that go undetected
round objects
size and spcing of targets

Question 17

strategies to help children with echolocation

Answer 17

help children notice sounds associated with passive echolocation

start by locating large objects with active echolocation to build confidence

Question 18

environmental sources that create sound

Answer 18

cars
dogs
water
singing
clapping
tapping cane

Question 19

sound shadow

Answer 19

area of reduced sound energy, on the side of the baffle opposite the sounds source

ex)passing cars absorbed by poles or bus shelters

Question 20

sound masking

Answer 20

introduction of ambient sound to a space to mask disruptive environmental noice