Pseudovent and decongestant

This medication seems to be a great decongestant. However, for the past week, I have been in a fog and my vision has been wacked. It's as if my eyeballs are floating independent from each other in my head. Some days are worse than others. It is only fair to note that after the first couple of days of taking it, I quit taking it because of the reaction. Then, after seeing my doctor again, I went back to it, which has probably started the whole process all over. It's not unbearable but, something to be aware of. I am getting relief from my congestion.