I use opcon-a which is more expensive but definitely worth it. it used to be rx only. one drop in each eye will give you movie star-white eyes for several hours. clear eyes sux. you might look at it the same way as dank bud vs. shwag. you need to inhale less of the quality stuff to be stoned, excessive shwag smoking can mess up the lungs. in the same sense, using clear eyes frequently could be irritating compared to the occasional need to use opcon-a