University of South Florida: MDC1507 Module 7 MDC Notes,100% CORRECT
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Course
MDC 1507
Institution
MDC 1507
University of South Florida:MDC1507 Module 7 MDC Notes
Sensory & Perception:
• Interaction with our environment depends on an intact sensory perceptual system.
• Vision, hearing, smell, taste, touch and the ability to perceive how our body is positioned in our environment helps us interact...
university of south floridamdc1507 module 7 mdc notes
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University of South
Florida:MDC1507 Module 7
MDC Notes
Sensory & Perception:
• Interaction with our environment depends on an intact sensory perceptual
system.
• Vision, hearing, smell, taste, touch and the ability to perceive how our
body is positioned in our environment helps us interact with the
environment in a purposeful way.
• To interact in a positive way we need to be aware of the stimulus and respond
to it
Ocular
Functions:
• Refraction
o Bends light rays from the outside into the eye
• Pupillary Constriction & Dilatation
o Control the amount of light that enters the eye
• Accommodation
o Allows the eye focus images sharply on the retina
o Close or distant
• Convergence
o Ability to turn both eyes inward toward the nose at the same time
Ocular: Age- Related Changes:
STRUCTURE/ CHANGE IMPLICATION
FUNCTION
Appearance Eyes appear Do not use eye appearance as an
“sunken.” indicator for hydration status.
,Arcus senilis forms. Reassure patient that this change
does not affect vision.
Sclera yellows or Do not use sclera to assess for
appears blue. jaundice.
, Cornea Cornea flattens, Encourage older adults to have
which blurs regular eye examinations and
vision. wear prescribed corrective
lenses for best vision.
Ocular muscles Muscle strength is Reassure patient that this is a
reduced, making it normal happening and to re-
more difficult to focus gaze frequently to maintain
maintain an upward a single image.
gaze or a focus on a
single image.
Lens Elasticity is lost, Encourage patient to wear
increasing the near corrective lenses for reading.
point of vision
(making the near
point of best vision
farther away).
Lens hardens, Stress the importance of
compacts, and annual vision checks and
forms a cataract. monitoring.
Iris and pupil Decrease in ability to Teach about the need for good
dilate results in small lighting to avoid tripping and
pupil size and poor bumping into objects.
adaptation to
darkness.
Color vision Discrimination The patient may not be able to
among greens, use color- indicator monitors of
blues, and violets health status.
decreases.
Tears Tear production is Teach about the use of saline
reduced, resulting in eyedrops to reduce dryness.
dry eyes, discomfort,
Teach patient to increase
and increased risk
humidity in the home.
for corneal damage
or eye infections.
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