How the hell do I turn the brightness down on my ACER laptop screen?

[MyCatsABiggerBastardThanYours]

There aren't dials on the laptop itself, have searched high and low. I've gone to control panel and found appearance personalization but that doesn't do it either.

If anyone can help I'd be most grateful because I'm getting sore eyes from being on MN using my PC for work and research.

Are there any symbols like a sun on youf F keys (top row of the keyboard?)

Actually, just popped upstairs to look at DH's Acer. The symbols are on the left and right arrow keys. Hold dowm the fn button and press the left arrow key

othersideofthefence you are my saviour. It works! I can now contiue my work MN surfing without buggering up my eyes.

Thank you v much

No problem! I would hate to think of anyone being unable to MN work!