Download CLSA General Session II - Opticians Association of Ohio

New York State, NCLE, JCAHPO, ABO Application
Course Application:
Michael Gzik FCLSA, NCLE, COT
Course / Lecture Title: Computer Vision Syndrome: Signs Symptoms and
Management
Course Length: 1 Hour
Level: Basic, intermediate
Course Classification: Technical
Intended Audience: NCLE, JCAHPO, ATPO and ABO certified, Opticians, and contact
lens technicians and practitioners. MD’s , OD’s, para-optometrics .
Course Objectives: Upon completion of this course the student should* be able to:
1. Identify three contributing factors causing Computer Vision Syndrome
2. Identify three symptoms of Computer Vision Syndrome.
3. Describe the nature and extent of the problem.
4. Describe how to decreases the symptoms of Computer Vision Syndrome
using Contact Lenses and or spectacles
Teaching Methods: Didactic lecture power point presentation, Presenter participant
interaction
Prerequisites: Participants should have a basic knowledge of anatomy, physiology
of the eye, and basic Contact Lens fitting and follow up techniques.
Basic Knowledge of Spectacle correction with Single vision, Bifocal and
Progressive Lenses
Abstract: Almost everyone users computers in one way or another
in our current society. The participant will be able to recognize
various forms of computer vision syndrome, and how to manage
or decrease the special strain computer usage causes. This will
include but is not limited to the computers and workstation
themselves, spectacle and contact lens designs, and patient training.
Audiovisual Needs: Microphone if in a large setting. LCD projector and screen. Flip
chart
Course Description: Almost everyone users computers in one way or another
in our current society. The participant will be able to recognize
various forms of computer vision syndrome, and how to manage
or decrease the special strain computer usage causes. This will
include but is not limited to the computers and the workstation
, spectacle and contact lens designs, and patient education.
Michael Gzik FCLSA
Computer Vision: Signs Symptoms and Management
(Outline 50 minutes)
1. Computer Vision
Computer Usage hazards
Computer Images
Screens
Fonts
Glare
Set up
2. Computer Vision
Environment
10 minutes
5 minutes
3. Computer Vision Symptoms
Dry Eyes
Headaches, fatigue
Eye Irritation
Blurred vision
Photophobia
Temporary inability to focus on a distant object
Double Vision
10 minutes
4. Computer Vision Signs
Redness
Foggy vision
10 minutes
5. Computer Vision Management
Contact Lens designs
Glasses
Ergonomics
15 minutes
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Hand Out
Computer Vision Syndrome
Michael Gzik FCLSA,COT ABO/NCLE
American Optometric Association
“The complex of eye and vision problems related to near work which are
experienced during or related to computer use”
• Computer Vision
Environment
• Air vents
• Climate controlled
• Many work stations are not designed but adapted for computer
• Fluorescent lights
• Hand held displays
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Computer Usage Hazards
Visual symptoms occur in 50% to 90% of computer workers
Some sources suggest that CVS is 40 times more common than carpal tunnel
syndrome
Glare from environment can lead to eyestrain
Can trigger migraines ?
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Computer Images
Made up of pixels not as clear as printed words
Pixels are brightest at the center and diminish in intensity toward their edges
Computer screen has re-fresh rates that vary, older computers not as
friendly
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People compensate for vision relief
Tilting head
Slump
Squint
Position/Posture
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Computer Vision Symptoms
Dry eyes/scratchy feeling
Headaches, fatigue
Eye Irritation
Blurred vision
Photophobia
Temporary inability to focus on a distant object
Double vision
Sore neck, body fatigue
Computer Usage and Children
Larry K. Wan OD
• University of California at Berkeley School of Optometry.
25% to 30% of computer-using children need corrective eyewear to work
comfortably and safely at the computer at home or in school
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Computer Usage and Children
Children should have a comprehensive eye exam, including near-point
(computer and reading) and distance testing
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Workstations should be arranged to suit a child not an adult.
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The recommended distance between the monitor and the eye for children is
18-28 inches
Parents and teachers should be aware of any behavior that indicates
potential problems, such as eye redness, frequent rubbing of the eyes, head
turns and other unusual postures, or complaints of blurriness or eye fatigue.
Avoidance of the computer may also be an indication of discomfort
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Computer Vision Signs
Red eyes
Corneal staining
Surface debris on contact lenses
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Computer Vision Syndrome
Results in
Worker fatigue
Reduced productivity
Increased errors
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Computer Vision Management
National Institute of Occupational Safety and Health (NIOSH) recommends
yearly eye exams for computer users
Computer Safety
Computer Vision Management
Removing direct light sources
Changing the computer station (top of screen at eye level)
Installing blinds, screens, or shades to reduce glare
Wear visor or cap
Using anti-reflection computer screen.
Replace tube-style monitor (called a cathode ray tube or CRT) with a flatpanel liquid crystal display (LCD)
Key Board Glare
Anti Glare Filters
3M EF200LB Black Framed Anti glare Radiation Computer Filter
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AF100XL 3M Anti-glare Computer Filter/glare Reduction/CONRAST
Humanscale Glare and Privacy Filters for Your Monitor
Computer Vision Management
Adjust the display settings on your computer so the brightness of the screen
is about the same as your work environment.
Make sure the background is not to bright (light source) or to dark (poor
contrast)
Adjust the screen settings for contrast between the screen background and
the on-screen characters
Computer Vision Management
According to Dr James Sheedy text size should be three times the smallest
text size you can read from your normal viewing position
He is a great guy
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Computer Vision Management
Drink plenty of water
Remove stress (yoga, frequent breaks)
Frequent computer breaks stand up, move about and stretch your arms, legs,
back, neck and shoulders.
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Yoga
Neck turn
Neck flex
Torso twist
Leg flex
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20/20/20
Every 20 minutes
Look at a distance of 20 feet
For 20 seconds
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Computer Vision Management
Place written pages on a copy stand adjacent to the monitor. Light the copy
stand properly.
Improve your posture during computer work Adjust your workstation and
chair to the correct height.
Back Roll
The computer screen should be 20 to 24 inches from your eyes
The center of your screen should be about 10 to 15 degrees below your eyes
for comfortable positioning of your head and neck.
Presbyopic Contact
Lens Alternatives
Reading glasses
over distance CL
Monovision
– Extended wear
– Toric Lenses
– Disposable Lenses
– RGP Lenses
Simultaneous Vision
– Aspheric Lenses
– Diffractive Lenses
– GP lenses
Alternating Vision
– GP Lenses
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Contact Lenses
Deliver the best vision field
Daily disposable
Lower water content hydrogels
Silicone hydrogels
Aspheric designs
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Multifocals
Make sure cylinder is corrected
Gas permeable multifocals
Gas permeable translating
Monovision
• Patient Screening
• Expectation
Vision or Function
Motivation
Part time or Full time
• Lifestyle
Activities / Working
• Age
Work Force / Retired
• Diagnostic Screening
• Visual acuity
1. Monocular/Binocular
2. Rx
• Ocular physiology
1. Tear quality
2. Corneal Integrity
3. Lid configuration
4. Corneal curvature
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Aspheric Lenses
Aspheric Lenses
Gradual Increase in Plus Toward Periphery
ADD Determined by Shape Factor
E-Value
Aspheric Multifocals
Translating Vision CL Limitations
Effectiveness dependent on translation
Must be rotationally and vertically stable
Discomfort due to thick lens design
Variable visual performance
Currently, no successful SCL’s
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Contact Lenses
Rewetting drops
More frequent replacement
Spectacles
Single vision near