Computer Vision Syndrome (for test 2)

What are the 4 factors that affect visual efficiency?

1. contrast 2. size 3. lighting 4. viewing time **slide 11

Visual performance increases steadily with font size up to _______. Letters smaller than this will cause decreased performance.

20/80

Up to ______ to ______% of computer users experience at least some symptoms of Computer Vision Syndrome (CVS)

70 - 90%

Computer Vision Syndrome (CVS) symptoms _______ (select all that apply) A. are usually temporary B. are not usually temporary C. will usually worsen with time

A. are usually temporary C. will usually worsen with time **these symptoms are temporary and will decline after you stop using the computer

Which are the two most common symptoms of Computer Vision Syndrome (CVS)? (pick 2) A. eyestrain B. headaches C. blurred vision D. double vision E. dry eyes F. neck and shoulder pain

A. eyestrain B. headaches

Which are symptoms of Computer Vision Syndrome (CVS)? (select all that apply) A. eyestrain B. headaches C. blurred vision D. double vision E. dry eyes F. neck and shoulder pain

A. eyestrain B. headaches C. blurred vision D. double vision E. dry eyes F. neck and shoulder pain

If using a desk lamp to read, use one with ______ wattage A. low B. high

A. low

Which of the following may cause Computer Vision Syndrome (CVS)? (select all that apply) A. poor or uneven lighting B. glare on the screen C. improper viewing distance D. improper seating or posture E. uncorrected refractive error F. uncorrected accommodative or binocular dysfunction

A. poor or uneven lighting B. glare on the screen C. improper viewing distance D. improper seating or posture E. uncorrected refractive error F. uncorrected accommodative or binocular dysfunction

Patients should be educated about the 20/20/20 rule and conscious blinking while using the computer A. true B. false

A. true

Patients should minimize the amount of eye movements when using the computer to avoid CVS symptoms A. true B. false

A. true

When visual demands exceed visual skills, patients will experience symptoms of Computer Vision Syndrome (CVS) A. true B. false

A. true

Computer Vision Syndrome (CVS) is also referred to as Digital Eye Strain (DES). A. true B. false

A. true **This is a group of eye and vision-related problems that result form prolonged computer, tablet, e-reader, and cell phone use.

Vision therapy may help treat the symptoms of Computer Vision Syndrome (CVS)? A. true B. false

A. true **management of CVS depends on the etiology and can range from spectacles to vision therapy

We want contrast as close to _____% as possible A. 0 B. 100

B. 100

Glare may _______ the blink reflex A. decrease B. increase

B. increase **slide 14

What is a LONG term effect of Computer Vision Syndrome (CVS)? A. hyperopia B. myopia

B. myopia **distance vision blur **slide 8

Accommodative insufficiency should be corrected with ______ lenses A. minus B. plus

B. plus **slide 17

Esophoria should be corrected with ______ lenses A. minus B. plus

B. plus **slide 17

Studies show that extended computer use in _______ is most symptomatic A. downgaze B. upgaze

B. upgaze

Reference material should be located _______ A. below the keyboard and monitor B. above the monitor C. above the keyboard and below the monitor

C. above the keyboard and below the monitor **the goal is to minimize eye and head movements **slide 18

If you prescribe contact lenses to a patient, watch out for _______

dry eye syndrome **be careful, DES is dry eye syndrome and digital eye strain

When you are sitting typing on the computer, your wrists shouldn't rest on the _______ when typing

keyboard