Computer Vision Syndrome PPT
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Computer Vision SyndromeAtika Prissilia030.07.038
Computers are one of the most fascinating inventions of the 20th century. However, computer users confront new challenges both at their workplace and school systems. By working long hours using a computer monitor, a compilation of systemic and ocular symptoms may develop.
What is CVS?
Definition A temporary condition resulting from focusing the
eyes on a computer display for protracted, uninterrupted periods of time. Some symptoms include headaches, blurred vision,
neck pain, fatigue, eye strain, dry, irritated eyes, and difficulty refocusing the eyes.
Etiology1. Computer user : - Not ergonomic body position - Eye disorder 2. Computer : - Screen - Keyboard - Chair3. Room : - Lighting - Air conditioner / fan
Signs & SymptomsEmployees suffering from CVS experience such as : Headaches Eyestrain Itchy eyes Tired eyes (asthenopia) Blurred vision Double vision Fatigue and Tense muscles (e.g neck and shoulder pain)
Extreme CVS can even cause : Nausea Poor nutrition and loss of appetite Migraines and Cluster headaches
Pathofisiology Caused by decreased blinking reflex while working
long hours focusing on computer screens. The normal blink rate in human eyes is 1620 per minute. Studies have shown that the blink rate decreases to as low as 68 blinks/minute for persons working on the computer screen. This leads to dry eyes
The near focusing effort required for such long hours puts strain on ciliary muscles of the eye will induces : symptoms of asthenopia a feeling of tiredness in the eyes after long hours of work.
Therapy & Prevention Therapy for symptom Dry eye artificial tear solutions Asthenopia or eye strain some massage around
Intervensive the risk factor
Ergonomic body position
The angle of the eyes to computer screen arrange twenty degrees, it will reduce the risk for asthenopia. And then, the arm position to keyboard, leg position to chair, whole body position to chair and computer table will affect the good ergonomic position.
Therapy & Perevention (contd) Good lightingLight reflected from the lamp must be indirect, it means for reduce unsuitable light that cause photophobic. The ideal window position is from the side of the computer, it porpose to make the screen not be impacted light from the window.
Therapy & Perevention (contd) Glare screens
Anti-glare filters for computer screens may increase comfort Computer eyeglasses
Wearing specially prescribed computer glasses when working at your computer may keep your eyes from getting worse by reducing excessive focusing demands on your eyes Lenses for computer glasses
will help you see your computer screen clearly
TreatmentMedication Medical therapy for dry : Topical lubricants Cyclosporine A ophthalmic emulsion Punctal occlusion Surgical Care Surgical indications used for patients with dry eye syndrome are also used for patients with CVS. Some patients may benefit from punctal plug insertion.
ComplicationSimilar to those in patients with dry eye, including : superficial punctate keratitis keratitis.
Conclusion Computer vision syndrome (CVS) occur when we use
computer for long times. The symptom will affect all of the body and it also
affect productivity to work. There are many methods to prevent and treat CVS,
such as change of habbit when using computer or intervensive the instrument of computer and the environment where we work.
References Dry Eye Syndrome. Available at: http://www.nlm.nih.gov/medlineplus/dry-eyes therapy.html Accessed May 25, 2010. Informa Health Care. Study for Computer Vision Syndrome. May 2007, Vol. 8 (7): Pages 211-20. Available at: http://informahealthcare.com/doi/stud/10.1517/146565126.96.36.199 Accessed May 30, 2010. Mayo Clinic Staff. Computer Vision Syndrome. Available at: http://www.mayoclinic.com/health/CVS/DS0031 Accessed May 25, 2010. Medicinet. Musculoskeletal disoredered. Available at: http://www.medicinenet.com/MSherapy/article.htm Accessed May 30, 2010. National Library of Eye diseases. Available at: http://www.nlm.nih.gov/medlineplus/Eyestrain.html Accessed May 25, 2010.