MacBook Pro screen non-uniform brightness

MacBook Pro Retina 13" screen is brighter on left side than on the right. Entire screen is readable, but not uniform. How do I fix this problem, and is this an indication of worse screen problems to come?

Try  Reset  PRAM.
Some  of the display settings are stored in PRAM.
Reset PRAM:   http://support.apple.com/kb/PH14222
Reset SMC.     http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Best.

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    Message was edited by: Dave Sawyer

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