Botox for Static Wrinkles on the Forehead?

No I would not put any more Botox into your forehead. You are compensating for you eyelid problem by using your forehead. This allows you to achieve better vision. IF you inject your forehead, you may diminish the wirnkles or creases with time but your forehead will cause your brows to lower which may aggravate the sagging (ptosis) of the upper eyelids and produce a visual field obstruction.
IT sounds as if you would achieve better results with an upper eyelid surgery. Once this is accomplished, your forehead will relax and the lines should soften.
You may want to discuss this with your opthalmologist to establish a diagnosis. There are many conditions which can lead to sagging o fthe upper lids and these should be evaluated.

Dear Billabong girl
Your forehead muscle (frontalis) is working hard to over come the heavy upper eyelids. The lines you see on the forehead are evidence of this work. These are dynamic lines. A static line is a crease in the skin that is present even when the muscles are at rest.
If you have some one BOTOX your forehead, your forehead will be smooth as glass (think Marcia Cross or Nichole Kidman). However, you will pay an aesthetic price. This treatment works by paralyzing the frontalis muscle. So the forehead lines will be smooth but the the eye brows will drop like stones.
I have developed the microdropletTM forehead lift, a patent pending method of precisely treating the muscles that pull the eyebrow down. These muscles live at the level of the eyebrows. Treatment of this area needs to be precise and very superficial. I use microdroplets of BOTOX solution to accomplish this treatment. The result is that the eyebrow elevates and the forehead smooths because the muscles of the forehead don't have to work as hard to maintain the lift.