system
Given the following post, respond as if you're commenting on Reddit:
human
[ Xmen ] Why doesn't Cyclops' optic blast throw his glasses off of his face?
gpt
The ruby quartz in the lenses resonates at a frequency matching him. They negate the energy before it has a chance to become forceful.  

There is a focal point a few inches in front of his eyes where the beam actually formed (think of the focal point of a magnifying glass when focusing sunlight). This is why when he wears sunglasses, you don't see a firey beam behind them waiting to burst out.