Inner Eye Corner Wrinkles: What Helps?

I use botox for crow's feet, but it seems I have more lines now in the inner corner of my eyes (near the nose), especially when I laugh. I hate these crêpe-like lines. What can be done about them? Maybe not much? As I saw Charlize Theron in the movie 'Young Adult' and she had them too... (and the rest of her face is obviuously treated with botox and fillers) I do notice that after botox shots these lines seem somewhat less. It's been 2 months since my shots of 16 units now.