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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 • 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 • • • • 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 ? • • • 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 • • • • People compensate for vision relief Tilting head Slump Squint Position/Posture • • • • • • • • 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 • Computer Usage and Children Children should have a comprehensive eye exam, including near-point (computer and reading) and distance testing • Workstations should be arranged to suit a child not an adult. • 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 • • • • Computer Vision Signs Red eyes Corneal staining Surface debris on contact lenses • • • Computer Vision Syndrome Results in Worker fatigue Reduced productivity Increased errors • • • • • • • • • • • 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 • • • • • • • 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 • • • 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. • • • • Yoga Neck turn Neck flex Torso twist Leg flex • • • 20/20/20 Every 20 minutes Look at a distance of 20 feet For 20 seconds • • • • 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 • • • • • Contact Lenses Deliver the best vision field Daily disposable Lower water content hydrogels Silicone hydrogels Aspheric designs • • • 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 • • • • • • • • • • 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 • • • • Contact Lenses Rewetting drops More frequent replacement Spectacles Single vision near