Human vision, visual correction, and visual science

Eyestrain and computer monitor refresh rates

I would like to convince my employer of my need for a better computer
monitor, in order to increase the refresh rate (esp. interlaced to
non-interlaced) and resolution (CRT dot pitch) and thereby reduce
eyestrain and headaches.

Are there any medical reports which I can use to establish this link
and justify to my employer the need for a new monitor?


Michael Malak         Home: ma…@access.digex.net
Washington, DC        Work: ma…@notes.sonix.com

Comments (12)




12 Responses to “Eyestrain and computer monitor refresh rates”

  1. admin says:

    The problem is also any flourescent lighting, the tow work in conjunction
    to casue eye fatigue. My present employer (I’m a consultant) has given me
    the most fatigue due to the extreme amount of flourescent lighting over
    the computer work areas. My previous employer let me use an incandescent
    lamp on my desk for lighting and I never had any eyeproblems.

    Andy

    Michael Malak (ma…@access5.digex.net) wrote:

    : I would like to convince my employer of my need for a better computer
    : monitor, in order to increase the refresh rate (esp. interlaced to
    : non-interlaced) and resolution (CRT dot pitch) and thereby reduce
    : eyestrain and headaches.
    :
    : Are there any medical reports which I can use to establish this link
    : and justify to my employer the need for a new monitor?
    :
    : —
    : Michael Malak         Home: ma…@access.digex.net
    : Washington, DC        Work: ma…@notes.sonix.com
    :

  2. admin says:

    domon…@access5.digex.net (Andy Domonkos) wrote:
    >The problem is also any flourescent lighting, the tow work in conjunction
    >to casue eye fatigue. My present employer (I’m a consultant) has given me
    >the most fatigue due to the extreme amount of flourescent lighting over
    >the computer work areas. My previous employer let me use an incandescent
    >lamp on my desk for lighting and I never had any eyeproblems.

    I have an incandescent lamp on my desk; however, its IR hurts my
    mouse’s eyes, so I have to use my mouse in my desk drawer.  But that’s
    OK; it’s more ergonomic that way anyhow.  And mice should be clicked
    and not seen.

    Ray

    - Hide quoted text — Show quoted text -

    >Michael Malak (ma…@access5.digex.net) wrote:
    >: I would like to convince my employer of my need for a better computer
    >: monitor, in order to increase the refresh rate (esp. interlaced to
    >: non-interlaced) and resolution (CRT dot pitch) and thereby reduce
    >: eyestrain and headaches.
    >:
    >: Are there any medical reports which I can use to establish this link
    >: and justify to my employer the need for a new monitor?
    >:
    >: —
    >: Michael Malak         Home: ma…@access.digex.net
    >: Washington, DC        Work: ma…@notes.sonix.com
    >:

  3. admin says:

    ma…@access5.digex.net (Michael Malak) writes:
    > I would like to convince my employer of my need for a better computer
    > monitor, in order to increase the refresh rate (esp. interlaced to
    > non-interlaced) and resolution (CRT dot pitch) and thereby reduce
    > eyestrain and headaches.

    > Are there any medical reports which I can use to establish this link
    > and justify to my employer the need for a new monitor?

    > —
    > Michael Malak         Home: ma…@access.digex.net
    > Washington, DC        Work: ma…@notes.sonix.com

    If you’re running a new enough computer, there is a set of win95 utils
    called "power toys", which you can download from microsoft. One of them
    lets you adjust many settings on monitors, including refresh rate, if
    the card supports it. Changing the refresh rate just slightly is
    enough for me-and I spend 20 hrs a week in front of a screen as a web
    programmer. If you have an older computer, your drivers may allow
    adjustment, and there may be utils that help there too-check the FTP
    site for the manufacturer, simtel (www.simtel.com) and see.

    As far as medical links, look for information on "nintendo epilepsy"-
    the phenomenon by which computer gaming players sometimes get headaches
    and seizures due to screen flicker. Many mentioned a migraine connection
    as well, and the resource list might give even more specific references.

    Finally, if you wear glasses, and haven’t already, check about getting
    a Anti-reflective coating-this really helps to reduce eyestrain from
    long hours on the computer. It cost me about $50 to get one added to
    mine, and has been well worth it.

    Hope some of this helps
    D2M

    Donna DeVore Mettler
    dmett…@ttmath.ttu.edu
    http://www.math.ttu.edu/~dmettler/

    Musician, Preschool Teacher, and Education Grad Student
    All Children deserve a SPECIAL education!

  4. admin says:

    On 21 Oct 1996, Michael Malak wrote:

    > I would like to convince my employer of my need for a better computer
    > monitor, in order to increase the refresh rate (esp. interlaced to
    > non-interlaced) and resolution (CRT dot pitch) and thereby reduce
    > eyestrain and headaches.

    > Are there any medical reports which I can use to establish this link
    > and justify to my employer the need for a new monitor?

    > —
    > Michael Malak         Home: ma…@access.digex.net
    > Washington, DC        Work: ma…@notes.sonix.com

            Look at your local library or on the Web for information on the
    Americans with Disabilities Act.  This will help with the procedures for
    justifying the need to your employer.
            I don’t know of any medical reports on this subject, although
    it’s been discussed quite a bit on this newsgroup.  Once again, you could
    surf the Web for info.  Here are two  good migraine Web pages, if you don’t
    already have the links:

    http://www.ntek.com/ronda/
       Ronda’s Migraine Page
    http://www.headaches.org/
       National Headache Foundation Sign-In Page

            I’m taking the liberty of re-posting a good post on lighting.

    Yours,
    Dennis

    <*****quote*****>
    From jord…@iquest.netTue Oct 22 08:31:15 1996
    Date: 14 Oct 1996 18:55:17 GMT
    From: Jordanne <jord…@iquest.net>
    Newsgroups: alt.support.headaches.migraine
    Subject: lighting and migraines

    Dear folks of ASHM,

    I have been wanting to write this post for a long time.  I am a
    lighting designer and also I get migraines.  I have been studying the
    effects of lighting on people who are prone to migraine.

    I am able to do this because I design lighting for the work stations of
    people with physical and mental handicaps.  Many of those persons get
    migraines in addition to their other handicaps.

    Here are a few things I have learned about light and migraines:

    1:  cool white fluorescent lights are terrible for many migraine
    sufferers.  They put out mostly ultraviolet and violet light which
    makes your photoreceptors in the eyes work about 8 times harder than
    they would in warm white fluorescent light.  The first thing I do when
    designing a work station is to change all the fluorescent lights from
    cool white to warm white. (the color label is on the tube itself.  Warm
    whites are labeled WW or F40WW or DX40/27, depending upon which brand
    you buy)

    2.  Direct sunlight on the work station will sometimes cause a
    migraine.  I always install window shades to temper the light.

    3.  Indirect light, such as wall sconces that direct the light in a
    nice wash up or down the wall is preferable to overhead light.  Lamps
    with pink shades will also do this effectively.

    Now here is the biggie!!  Somewhere I read in an old obscure journal
    that if a person is in a migraine cycle, or even in the process of a
    single headache, that if all artificial light is eliminated except
    green light (also known as middle-spectrum light), the person is more
    likely to recover more quickly.

    I have tried this out on myself and a couple of my clients.  I
    installed a lamp with a green party bulb next to my desk lamp.  If I
    feel a headache coming on, I close the shades, turn off all lights
    except the desk lamp, with a heavy shade, and a green bulb.  The
    results were astonishing.  My headache never fully developed.  Also I
    installed a green, shaded, lamp in my bedroom since I tend to wake up
    with a headache.  If I woke up and felt headachey, I turned on the lamp
    which was about 3 feet from my bed.  The green glow fell on the side of
    the bed, but not directly in my eyes.  When I woke up again later, no
    headache.  Same results for my clients.  I do not claim that it works
    all the time, nor do I know which people it will work for.  But I do
    know that it has worked sometimes for me and my clients.

    Now I recognize that this is a very small sample, not big enough to
    draw any conclusions. But if any of you are willing to invest a couple
    of dollars for a green light bulb and try it out yourself, then report
    the results to me, I’d appreciate it very much.  This might be
    something that could help a lot of people.

    If you do try it, please let me know your results. And if you do try
    it, remember to try to eliminate other kinds of light from the room.

    Thanks a bunch,

    Jordanne

    jord…@on-net.net
    jord…@iquest.net
    http://www.stjpub.com/personal/wiredapache.html/

  5. admin says:

    Dennis Stallings <denst…@tyrell.net> wrote:
    >On 21 Oct 1996, Michael Malak wrote:

    ……………….

    From a quoted letter:

    >Here are a few things I have learned about light and migraines:
    >1:  cool white fluorescent lights are terrible for many migraine
    >sufferers.  They put out mostly ultraviolet and violet light

    BS!  Very little, although a little more than do warm white ones.

    >which
    >makes your photoreceptors in the eyes work about 8 times harder than
    >they would in warm white fluorescent light.  

    Who figured this out?  Where?  Who says such a thing would have
    anything to do with migraine if actual?

    >The first thing I do when
    >designing a work station is to change all the fluorescent lights from
    >cool white to warm white. (the color label is on the tube itself.  Warm
    >whites are labeled WW or F40WW or DX40/27, depending upon which brand
    >you buy)

    So you prefer warm white; probably nothing more.

    >2.  Direct sunlight on the work station will sometimes cause a
    >migraine.  I always install window shades to temper the light.
    >3.  Indirect light, such as wall sconces that direct the light in a
    >nice wash up or down the wall is preferable to overhead light.  Lamps
    >with pink shades will also do this effectively.
    >Now here is the biggie!!  Somewhere I read in an old obscure journal
    >that if a person is in a migraine cycle, or even in the process of a
    >single headache, that if all artificial light is eliminated except
    >green light (also known as middle-spectrum light), the person is more
    >likely to recover more quickly.

    Define "artificial light" while keeping a straight face.

    >I have tried this out on myself and a couple of my clients.  I
    >installed a lamp with a green party bulb next to my desk lamp.  If I
    >feel a headache coming on, I close the shades, turn off all lights
    >except the desk lamp, with a heavy shade, and a green bulb.  The
    >results were astonishing.  My headache never fully developed.  Also I
    >installed a green, shaded, lamp in my bedroom since I tend to wake up
    >with a headache.  

    Must be all that UV in your dreams.

    >If I woke up and felt headachey, I turned on the lamp
    >which was about 3 feet from my bed.  The green glow fell on the side of
    >the bed, but not directly in my eyes.  When I woke up again later, no
    >headache.  Same results for my clients.  I do not claim that it works
    >all the time, nor do I know which people it will work for.  But I do
    >know that it has worked sometimes for me and my clients.

    Have you tried UV or violet light on any of your aching clients?  Or
    even white light, warm or otherwise?  How about plaid?

    >Now I recognize that this is a very small sample, not big enough to
    >draw any conclusions. But if any of you are willing to invest a couple
    >of dollars for a green light bulb and try it out yourself, then report
    >the results to me, I’d appreciate it very much.  This might be
    >something that could help a lot of people.

    Or waste their time / confuse them.

    >If you do try it, please let me know your results. And if you do try
    >it, remember to try to eliminate other kinds of light from the room.
    >Thanks a bunch,
    >Jordanne
    >jord…@on-net.net
    >jord…@iquest.net
    >http://www.stjpub.com/personal/wiredapache.html/

    Sorry, I don’t get migraines under any circumstances, so I’d wreck
    your database (?).

    Ray

  6. admin says:

    - Hide quoted text — Show quoted text -

    Dennis Stallings <denst…@tyrell.net> wrote:
    >On 21 Oct 1996, Michael Malak wrote:
    >> I would like to convince my employer of my need for a better computer
    >> monitor, in order to increase the refresh rate (esp. interlaced to
    >> non-interlaced) and resolution (CRT dot pitch) and thereby reduce
    >> eyestrain and headaches.

    >> Are there any medical reports which I can use to establish this link
    >> and justify to my employer the need for a new monitor?

    >> —
    >> Michael Malak         Home: ma…@access.digex.net
    >> Washington, DC        Work: ma…@notes.sonix.com
    >    Look at your local library or on the Web for information on the
    >Americans with Disabilities Act.  This will help with the procedures for
    >justifying the need to your employer.
    >    I don’t know of any medical reports on this subject, although
    >it’s been discussed quite a bit on this newsgroup.  Once again, you could
    >surf the Web for info.  Here are two  good migraine Web pages, if you don’t
    >already have the links:
    >http://www.ntek.com/ronda/
    >   Ronda’s Migraine Page
    >http://www.headaches.org/
    >   National Headache Foundation Sign-In Page
    >    I’m taking the liberty of re-posting a good post on lighting.
    >Yours,
    >Dennis
    ><*****quote*****>
    >From jord…@iquest.netTue Oct 22 08:31:15 1996
    >Date: 14 Oct 1996 18:55:17 GMT
    >From: Jordanne <jord…@iquest.net>
    >Newsgroups: alt.support.headaches.migraine
    >Subject: lighting and migraines
    >Dear folks of ASHM,
    >I have been wanting to write this post for a long time.  I am a
    >lighting designer and also I get migraines.  I have been studying the
    >effects of lighting on people who are prone to migraine.
    >I am able to do this because I design lighting for the work stations of
    >people with physical and mental handicaps.  Many of those persons get
    >migraines in addition to their other handicaps.
    >Here are a few things I have learned about light and migraines:
    >1:  cool white fluorescent lights are terrible for many migraine
    >sufferers.  They put out mostly ultraviolet and violet light which
    >makes your photoreceptors in the eyes work about 8 times harder than
    >they would in warm white fluorescent light.  The first thing I do when
    >designing a work station is to change all the fluorescent lights from
    >cool white to warm white. (the color label is on the tube itself.  Warm
    >whites are labeled WW or F40WW or DX40/27, depending upon which brand
    >you buy)

            I have had about 35 years experience with all types of
    lighting and it is my opinion that rather than Warm White
    Fluorescent lamps that it is better to use Daylight lamps.
    Warm White lamps have a yellow tint and Daylight is the
    closest to actual daylight.  They have a very slight blue
    tint if any.
            If your work area is lighted with Fluorsent fixtures, add a
    small incandescent lamp even if it is real small just so it
    puts a little light out, even if you can’t see it.  This
    will reduce the 60 cycle flicker effect.  I don’t mean to
    imply that it gets rid of them, it just makes them a less
    problem and less noticeable.

    \\/ayne //\ann

    "The President has kept all of the promises he
    intended to keep."
     - George Stephanopolous on "Larry King Live"
     - 2/16/96

  7. admin says:

    In article <54kgo9$…@sun.sirius.com>, ra…@sirius.com (Raymond A.
    Chamberlin) writes:

    .

    - Hide quoted text — Show quoted text -

    >BS!  Very little, although a little more than do warm white ones.

    >Who figured this out?  Where?  Who says such a thing would have
    >anything to do with migraine if actual?
    >.
    >So you prefer warm white; probably nothing more.
    >.
    >Define "artificial light" while keeping a straight face.
    >.
    >Must be all that UV in your dreams..

    >Have you tried UV or violet light on any of your aching clients?  Or
    >even white light, warm or otherwise?  How about plaid?
    >.
    >Or waste their time / confuse them.

    >Sorry, I don’t get migraines under any circumstances, so I’d wreck
    >your database (?).

    >Ray

    O.K. Ray, can I call you Ray? Thanks.
    First of all, I take from your final line, that you stumbled (literally)
    into our group by doing a search on computers or eyestrain.
    Attack one, attack us all. We are all adults here, willing and able to use
    information posted here, as we see fit. This gentleman wasn’t trying to
    sell us anything. He is trying to help people with information he feels
    has some merit.

    Please do not make comments about something you know nothing
    about…..migraines. Especially, insulting, illogical, inane, and
    comments.
    I don’t know what your problem is, don’t want to discuss it, and can’t
    cure it. But, maybe you should discuss this problem with a doctor. It
    sounds to me like you may be suffering from *flourescent tube* envy.

    If you should decide to *flame* in return, please E-mail me directly, as I
    don’t feel the need to use up valuable bandwidth, putting the entire group
    through downloading your dribble.

    Sorry if my wording appears to be insulting, I don’t mean them to
    be….really.

    Since you may not *stumble* here again, I will E-mail to you, a copy.
    Maybe if your Mother reads it, she won’t let you play with the computer
    again!!!!

    Bob
    P.S.—Group, If this guy mail bombs me, and you don’t here from me in
    awhile ….. …………  I may need you to send me a Hacker!!!!! <G>
    He didn’t know That I’m STILL………..In the MOOD…

  8. admin says:

    In article <54kgo9$…@sun.sirius.com>, ra…@sirius.com (Raymond A.
    Chamberlin) writes:

    .

    - Hide quoted text — Show quoted text -

    >BS!  Very little, although a little more than do warm white ones.

    >Who figured this out?  Where?  Who says such a thing would have
    >anything to do with migraine if actual?
    >.
    >So you prefer warm white; probably nothing more.
    >.
    >Define "artificial light" while keeping a straight face.
    >.
    >Must be all that UV in your dreams..

    >Have you tried UV or violet light on any of your aching clients?  Or
    >even white light, warm or otherwise?  How about plaid?
    >.
    >Or waste their time / confuse them.

    >Sorry, I don’t get migraines under any circumstances, so I’d wreck
    >your database (?).

    >Ray

    O.K. Ray, can I call you Ray? Thanks.
    First of all, I take from your final line, that you stumbled (literally)
    into our headache group by doing a search on computers or eyestrain.
    Attack one, attack us all. We are all adults here, willing and able to use
    information posted here, as we see fit. This gentleman wasn’t trying to
    sell us anything. He is trying to help people with information he feels
    has some merit.

    Please do not make comments about something you know nothing
    about…..migraines. Especially, insulting, illogical, inane, and
    comments.
    I don’t know what your problem is, don’t want to discuss it, and can’t
    cure it. But, maybe you should discuss this problem with a doctor. It
    sounds to me like you may be suffering from *flourescent tube* envy.

    If you should decide to *flame* in return, please E-mail me directly, as I
    don’t feel the need to use up valuable bandwidth, putting the entire group
    through downloading your dribble.

    Sorry if my wording appears to be insulting, I don’t mean them to
    be….really.

    Since you may not *stumble* here again, I will E-mail to you, a copy.
    Maybe if your Mother reads it, she won’t let you play with the computer
    again!!!!

    Bob
    P.S.—Group, If this guy mail bombs me, and you don’t here from me in
    awhile ….. …………  I may need you to send me a Hacker!!!!! <G>
    He didn’t know That I’m STILL………..In the MOOD…

  9. admin says:

    At 07:06 PM 10/23/96 -0400, you wrote:

    - Hide quoted text — Show quoted text -

    >Chamberlin) writes:
    >.
    >>BS!  Very little, although a little more than do warm white ones.

    >>Who figured this out?  Where?  Who says such a thing would have
    >>anything to do with migraine if actual?
    >>.
    >>So you prefer warm white; probably nothing more.
    >>.
    >>Define "artificial light" while keeping a straight face.
    >>.
    >>Must be all that UV in your dreams..

    >>Have you tried UV or violet light on any of your aching clients?  Or
    >>even white light, warm or otherwise?  How about plaid?
    >>.
    >>Or waste their time / confuse them.

    >>Sorry, I don’t get migraines under any circumstances, so I’d wreck
    >>your database (?).

    >>Ray

    >O.K. Ray, can I call you Ray? Thanks.
    >First of all, I take from your final line, that you stumbled (literally) into
    >our group by doing a search on computers or eyestrain.

    Wrong!  The poster whose article I answered cross-posted to
    sci.med.vision where I normally post.  If you people in the migraine
    group can’t handle rebuttle, stay in your own bailiwick.  From the
    e-mail response resultant from my post, it’s clear that you people are
    some kind of think-alike cult.  If you can’t handle the outside world,
    then don’t let any of your people cross-post.  I’m not specifically
    interested in eyestrain, computers or lighting and don’t search the
    Net for these things.

    >Attack one, attack us all. We are all adults here, willing and able to use
    >information posted here, as we see fit. This gentleman wasn’t trying to sell
    >us anything. He is trying to help people with information he feels has some
    >merit.

    If phony gospel is put in front of me, I’m liable to rebut it in terms
    of practical knowledge.  If your adults, you can take it or leave it.
    From the e-mail I’m receiving, your not.

    >Please do not make comments about something you know nothing
    >about…..migraines. Especially, insulting, illogical, inane, and comments.

    Do you believe cool-white fluorescent lamps put out more UV than
    visible light?  Do you think I have to experience migraines to know
    the answer to this?

    >I don’t know what your problem is, don’t want to discuss it, and can’t cure
    >it. But, maybe you should discuss this problem with a doctor. It sounds to me
    >like you may be suffering from *flourescent tube* envy.

    >If you should decide to *flame* in return, please E-mail me directly, as I
    >don’t feel the need to use up valuable bandwidth, putting the entire group
    >through downloading your dribble.

    Sorry if I’ve inadvertently gotten onto the private channel of some
    nuthouse.

    >Sorry if my wording appears to be insulting, I don’t mean them to
    >be….really.

    Do you really know what you mean anything to be?

    >Since you may not *stumble* here again, I will E-mail to you, a copy. Maybe
    >if your Mother reads it, she won’t let you play with the computer again!!!!

    >Bob

    Hey, Bobbie, when you learned to play with your computer, didn’t they
    ever tell you about cross-posting?

    Ray

  10. admin says:

    RWold42932 (rwold42…@aol.com) wrote:

    : P.S.—Group, If this guy mail bombs me, and you don’t here from me in
    : awhile ….. …………  I may need you to send me a Hacker!!!!! <G>
    : He didn’t know That I’m STILL………..In the MOOD…

    Ooooooohhhh!  Sic’m, Bob!

    Priscilla (cheering)

  11. admin says:

    Priscilla H Ballou wrote:

    > RWold42932 (rwold42…@aol.com) wrote:

    > : P.S.—Group, If this guy mail bombs me, and you don’t here from me in
    > : awhile ….. …………  I may need you to send me a Hacker!!!!! <G>
    > : He didn’t know That I’m STILL………..In the MOOD…

    > Ooooooohhhh!  Sic’m, Bob!

    > Priscilla (cheering)

    Mr Ray answers virtually every post in sci.med.vision, whether he
    knows the correct answer or not. Some sort of personal need to be
    heard or something, like a child crying for attention. Ignore him.

  12. admin says:

    p…@world.std.com (Priscilla H Ballou) wrote:

    >RWold42932 (rwold42…@aol.com) wrote:
    >: P.S.—Group, If this guy mail bombs me, and you don’t here from me in
    >: awhile ….. …………  I may need you to send me a Hacker!!!!! <G>
    >: He didn’t know That I’m STILL………..In the MOOD…

    >Ooooooohhhh!  Sic’m, Bob!
    >Priscilla (cheering)

    Nice, girl.  Down, girl.  Here, close your teeth on this and take it
    back to your to your cult leader.   That’s a nice girl.
    Rrrrrrrrrrrff!

    Ray

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