Term
| What is the complex of eye and vision problems related to near work which are experienced during or related to computer use? |
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Definition
| CVS computer vision syndrome |
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Term
| What percentage of computer workers experience eye and vision problems? |
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Definition
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Term
| How many primary eye care patients have a chief complaint of CVS? |
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Definition
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Term
| Why is working at a computer so visually demanding? |
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Definition
1. Frequent saccadic eye movements
(Ocular motility)
2. Continuous eye focusing
(Accomodation)
3. Alignment demands
(Vergence)
4. Poorer contrast
5. Increased glare
6. Different working distances
7. Different viewing angles |
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Term
| Is CVS listed in the ICD-9 codes as a diagnosis? |
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Definition
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Term
| What is the recommended viewing distance for a computer screen? |
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Definition
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Term
| What is the recommended viewing angle for a computer screen? |
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Definition
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Term
| How do you determine if glare is a problem? |
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Definition
Instruct the patient to sit at his workstation with his computer off?
1) Do you see reflections on the monitor?
2) Do you see banks of overhead lights?
3) Do you see any reflections of windows? |
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Term
| What type of lighting do dim or dark screens require? |
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Definition
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Term
| What is the recommended light level at a workstation? |
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Definition
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Term
| What do you do if room lighting is too low to view printed material or the keyboard? |
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Definition
| Use supplemental lighting. Light should not produce glare on the screen. e.g. eclipse computer light |
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Term
| How does computer use aggravate dry eye symptoms? |
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Definition
| The increased visual attention reduces the SEBR (spontaneous eye blink rate) |
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Term
| Do eye drops alleviate VDT symptoms? Does it matter when they're put in? |
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Definition
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Term
| What is the most prevalent disorder among symptomatic computer users? |
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Definition
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Term
| What tests would you use to determine if additional plus is needed at near for a computer? |
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Definition
1) NRA/PRA
2) Accomodative facility
3) PRIO testing
4) Fused Cross cylinder |
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Term
| Name one advantage of PRIO testing? |
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Definition
| The illuminated screen placed at the near card distance replicates the Gaussian light characteristics of a video display |
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Term
| What type of test do you perform through the hole of a PRIO card? |
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Definition
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Term
| If the CRT terminal is placed higher than you need to move the seg height where? |
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Definition
| up. If the seg height is so high that it interferes with visual function in everyday life, a second pair of glasses may be advisable. |
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Term
| Can public computer terminals spread bacterial conjunctivitis? |
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Definition
| Yes, it happened at Dartmouth college |
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