Do flatscreens have flicker problems at low refresh rates?

I recently purchased a Dell widescreen, flatscreen monitor, maximum
refresh rate of 60 Hz. I could swear I'm getting eyestrain. I
thought the flatscreens (unlike the old CRTs) were not supposed to
have flicker problems, because the pixels should stay illuminated
between screen updates. Is my understanding mistaken? I'm trying to
figure out if I'm just imaginging the problem or not.

This is also a concern because the company I work for is offering a
choice between two 17" monitors or one 24" monitor -- but the 17"
monitors have 75 MHz refresh rates, while the 24" (again, a Dell) has
a 60 Hz refresh rate. (I think the model on the 60 Hz is the E248WFP
24-inch Widescreen Black Flat Panel LCD Monitor.) So again, does the
60 Hz cause eyestrain?

Thanks in advance for all replies

NoName wrote:
I recently purchased a Dell widescreen, flatscreen monitor, maximum
refresh rate of 60 Hz. I could swear I'm getting eyestrain. I
thought the flatscreens (unlike the old CRTs) were not supposed to
have flicker problems, because the pixels should stay illuminated
between screen updates. Is my understanding mistaken? I'm trying to
figure out if I'm just imaginging the problem or not.
>
This is also a concern because the company I work for is offering a
choice between two 17" monitors or one 24" monitor -- but the 17"
monitors have 75 MHz refresh rates, while the 24" (again, a Dell) has
a 60 Hz refresh rate. (I think the model on the 60 Hz is the E248WFP
24-inch Widescreen Black Flat Panel LCD Monitor.) So again, does the
60 Hz cause eyestrain?
>
Thanks in advance for all replies
could possibly be because using the larger monitor your eyes are moving
more to cover the extra size of the screen,even though you don't realize
it. Try moving further away from the monitor

NoName wrote:
I recently purchased a Dell widescreen, flatscreen monitor, maximum
refresh rate of 60 Hz. I could swear I'm getting eyestrain. I
thought the flatscreens (unlike the old CRTs) were not supposed to
have flicker problems, because the pixels should stay illuminated
between screen updates. Is my understanding mistaken? I'm trying to
figure out if I'm just imaginging the problem or not.
>
This is also a concern because the company I work for is offering a
choice between two 17" monitors or one 24" monitor -- but the 17"
monitors have 75 MHz refresh rates, while the 24" (again, a Dell) has
a 60 Hz refresh rate. (I think the model on the 60 Hz is the E248WFP
24-inch Widescreen Black Flat Panel LCD Monitor.) So again, does the
60 Hz cause eyestrain?

60Hz is normally K. Check that you are using the native screen
resolution, appropriate contrast/gamma, and, if using windows, that you
have the font aliasing enabled (Display
smooth edge of screen fonts: cleartype

NoName wrote:
I recently purchased a Dell widescreen, flatscreen monitor, maximum
refresh rate of 60 Hz. I could swear I'm getting eyestrain. I
thought the flatscreens (unlike the old CRTs) were not supposed to
have flicker problems, because the pixels should stay illuminated
between screen updates. Is my understanding mistaken? I'm trying to
figure out if I'm just imaginging the problem or not.
>
This is also a concern because the company I work for is offering a
choice between two 17" monitors or one 24" monitor -- but the 17"
monitors have 75 MHz refresh rates, while the 24" (again, a Dell) has
a 60 Hz refresh rate. (I think the model on the 60 Hz is the E248WFP
24-inch Widescreen Black Flat Panel LCD Monitor.) So again, does the
60 Hz cause eyestrain?
>
Thanks in advance for all replies

So I assume that you're talking about a flatscreen CRT monitor here,
rather than an LCD of some kind? I have noticed that 60Hz is often not
good enough for flicker-freedom, even though 60Hz is supposed to be
non-interleaved. It is the lowest of the non-interleaved refresh rates,
if you can get it upto 72Hz or higher it is better. I think the 60Hz
refresh makes it synchronous with the office lighting system, especially
the white fluorescent lamps. If the fluorescent lamps and the CRT are
just slightly out of sync with each other (e.g. one is at 59.9Hz, the
other at 60.1Hz, or something like that), then you'll see lines riding
up and down the screen. It's best to put the refresh rate up much higher
for the monitor to avoid this slightly-out-of-sync issue.

Yousuf Khan