Hi Peter,
I would add to that was that the advcice we received for students
subject to epylepsy was not to go for a big screen that filled the
student's field of vision. A standard monitor 14" or 15" is better. I
would suspect that your student may be better off with a standard
screen.
You might try adapting screen colours and space the text in a word
processor with 1.5 line spacing, perhaps 2. You could also select a
font style and size that is easy to read
Mick Trott
"EDWARDS R.H." wrote:
>
> Dear Peter,
>
> I think that there are a number of factors worth considering here - a)
> refresh rate; b) dot pitch and resolution; c) surrounding environment
> (including lighting) and d) position of the monitor etc. In turn:
>
> a) REFRESH RATE
>
> The refresh rate is the number of times (Hz), per second, that the screen
> refreshes. I bought a new monitor recently which has a refresh rate of
> 100Hz. This produces a rock steady image and is very comfortable on the eye.
>
> You also need a high quality graphics card (which drives the monitor) in the
> machine.
>
> I have found that many PCs are not actually set to perform at their best. By
> choosing 'Display Properties' in Control Panel, then the 'Settings' tab then
> the 'Advanced' button, then the 'Adaptor' tab, you can see the Refresh Rate
> displayed. Setting this to 'Optimal' will get the best out of your monitor
> and graphics card combination.
>
> b) DOT PITCH AND RESOLUTION
>
> Good monitors tend to have a dot pitch of between 0.25 and 0.29mm. The
> smaller the better. Standard monitor resolution is now commonly 800x600
> pixels (the size of image displayed on the screen). Those with larger
> monitors may choose 1024x768 or higher. The smallest standard resolution is
> 640x480. Your student may find that a particular resolution on a good
> monitor will alleviate or minimise headaches. I have found that a good
> common solution is 1024x768 on a 17" screen, then enlarge the text in Word
> to 133%, as a comfortable combination.
>
> c) SURROUNDING ENVIRONMENT
>
> The student may have comfortable lighting installed at home which he/she can
> alter to create a working environment which ensures that there are no
> reflections off the screen. Computer laboratories tend to have standard
> ceiling mounted lighting, often CATII (high frequency rate) flourescent
> tubes. Older lighting in a computer lab may not refresh at such a rapid
> rate, or those units which have yellowing diffusers and cause headaches.
>
> d) POSITION
>
> Sitting too close, sitting too far away, not having the monitor at the right
> height (it is common to have mini-tower units on the floor and the monitor
> on the desk - this makes small monitors too low down) can all make a
> difference.
>
> I hope this summary is useful. Come back to me if you want anything
> clarified.
>
> Richard.
>
> ----------------------------------------------
> Richard Edwards,
> Disability/Special Needs Officer, Room 403 Science Tower, University of
> Wales Swansea, Singleton Park, Swansea SA2 8PP.
>
> Tel: 01792 295336 Minicom/text: 01792 295089
> Fax: 01792 295090 Email: [log in to unmask]
> Web: http://www.swansea.ac.uk/disability/
>
> > ----------
> > From: Hill, Peter[SMTP:[log in to unmask]]
> > Reply To: [log in to unmask]
> > Sent: 15 March 2000 13:54
> > To: [log in to unmask]
> > Subject: Migraines and PC Monitors
> >
> > Hi
> >
> > One of our students (who has a hearing impairment) is having
> > problems using the college PC's. He feels that they are causing
> > migraines. He had a machine at home which, apparenlty, was
> > adjusted/adapted in some way and which did not induce migraine
> > attacks.
> >
> > He mentioned refresh rates - but was unable to furnish further
> > details. I've looked through the archives, but related info is confined
> > mostly to epilepsy.
> >
> > The situation has been complicated by the recent theft of his PC -
> > so we can't compare settings.
> >
> > Has anyone any ideas/similar experiences, etc.
> >
> > Regards
> > Peter J Hill
> > Disability Co-ordinator
> > Equal Opportunities Centre
> > Woodbury 3
> > University College Worcester
> > Henwick Grove
> > Worcester
> > WR2 6AJ
> >
> > Tel: 01905 855413
> > Email: [log in to unmask]
> >
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