What test kit are you using? Is it strips? With some nitrites and ammonia, I'd say your tank isn't cycled yet. How long have you had the tank set up and with fish? You have two issues: the cloudy eyes on the fish and a potentially uncycled tank. There's a link in my signature 'new tank with fish;' read it and it'll help you. Basically you need to test the water daily and any time ammonia and/or nitrite are over.25 you need to do a water change to get them down (this might mean a pwc every day); same with nitrates over 20. What's your ammonia level? Is it 1? Or is that the nitrate? If your ammonia is 1 I'd do a large 80% pwc with dechlorinator ASAP.
You could try doing the water changes for a few days and keep those levels down and see if the fish's eyes improve before treating it with a medicine. It could be just the toxins in the water.