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?

DefinitionA 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 - Chair

3. Room :- Lighting- Air conditioner / fan

Signs & SymptomsEmployees suffering from CVS experience such

as :HeadachesEyestrainItchy eyesTired eyes (asthenopia)Blurred vision Double visionFatigueand Tense muscles (e.g neck and shoulder

pain)

Extreme CVS can even cause :NauseaPoor nutrition and loss of appetiteMigrainesand Cluster headaches

PathofisiologyCaused by decreased blinking reflex while

working long hours focusing on computer screens.

The normal blink rate in human eyes is 16–20 per minute.

Studies have shown that the blink rate decreases to as low as 6–8 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 asthenopiaa 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 the eyebrow

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 (cont’d)Good lighting

Light 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 (cont’d)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 lubricantsCyclosporine A ophthalmic emulsionPunctal occlusion

Surgical CareSurgical 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 keratitiskeratitis.

ConclusionComputer 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.htmlAccessed 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/10.1517/14656566.8.7.211Accessed 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.htmAccessed May 30, 2010. National Library of Eye diseases.Available at: http://www.nlm.nih.gov/medlineplus/Eyestrain.htmlAccessed May 25, 2010.