When you force yourself to keep your eyes on the ball, it causes you to change your initial setup position and mishit the ball.
You cut across the ball, causing contact with the toe of the club, pull hooks or pull slices. You have also noticed that your hands and arms finish much lower than usual.
You have a reoccurring slice.
You have an out to in swing path, resulting in weak slices.
You are hitting pull hooks.
You are a recreational golfer with a pull slice during long swings and it is not from over swinging.
You only have an over the top slice when you try to make a powerful drive.
You lift the heel on your leading foot as you take the club back and lift your trailing heel up during your forward swing; yet you are slicing or are not seeing the power you expected from this technique.
You have been trying to add a greater turn to your swing but now you find that you are slicing the ball.
You are slicing the ball off of the tee box and cannot correct it by swinging more around the ball. However, this only causes the ball slice even worse or you hook the ball instead.