Stange marks on screen

[johnno93]

Hi all just noticed what looks like scratches on my monitor however they seem to be on the inside. I have no idea how they got there and what they are. Its really noticeable on bright colours as below:

Any ideas what's caused it and if it'll get worse as right now I could do without having to replace my monitor.

 

[Diagro]

Polariser looks cracked

 

[johnno93]

Googled that, from what I gather its not really worth getting repaired better to just buy a new one.