Mathematica 9.0 looks a bit fuzzy on the retina screen, how can I increase the resolution?

![enter image description here][1]

Here another screenshot showing a direct comparison between the browser and *Mathematica*

![enter image description here][2]


  [1]: https://i.sstatic.net/z2HWg.png
  [2]: https://i.sstatic.net/ysFT2.png