You failed to mention which O/S you are using, but I doubt you having a hardware issue as I've seen nothing on the internet that indicates the monitor might be causing this.
I think it's more likely that your settings/configuration is set to allowing shadowing of test and icons in your O/S which I don't like either but for some reason Microsoft and some of their customers seem to believe provide a better image. Being mostly a blind person myself I don't need Microsoft telling me what a good, distinct image looks like.
I'm using WinXP here so I will give you a quick walk-thru on locating the settings I have in mind that might be affecting your visual acuity. It's pretty much the same for Vista if you are using the newer O/S.
Locate Control Panel/System/Advanced/Performance ( Visual Effects )/Settings. There are 3 tabs there, with the first being Visual Effects. Default set by Microsoft allowing text and icon shadowing which actually only serves to slow your computer down. Instead of ' Adjust for Best Appearance ', set to ' Adjust for Best Performance '. Hit APPLY, then OK. This might take a couple of minutes to take hold as the screen will seem to go to a black and white mode while the re-configuration is taking place. Once it's done, reboot your computer for best chance that registry changes have taken place.
I'm hoping that is what you are talking about, however if it isn't, then come back with more exact information please.
By the way, I assume you know how to configure the monitor for brightness and contrast controls, because they can also be important in visual acuity of displays. For example I have a LCD monitor that functions as T.V. also, and I had it displaying a good t.v. picture but the VGA had to much blue tinge in it, which made it difficult for these old eyes to work with that monitor. I finally got into the monitor configuration and adjusted for best VGA display which ended up being a better display for T.V. also.
Like I said above, if above doesn't help, come back with more info please.