Help me please :'( my screen has gone weird!

hi, basically my screen is all S**t and has a horrible fuzzy like down the middle of it.... i don't know wether it's something i've caused or wether it's covered by apple's warranty......

Here's a picture..


Thanks for your time...

That looks like the graphics card or the display cable needs replacing.
You should take it to an Apple Store, and let the geniuses take a look at it.

If you want to find out yourself whats wrong, try hooking it up to an external display, if it persists you will most likely need a new graphics card.
If it doesn't appear on the external screen then its probably your display cable that needs replacing.

Easier also if you provide model details. Laptop or desktop?

If desktop try re-seating the graphics card and connect all cables securely. If laptop off to Apple dealer.