Sometimes the detox effects from the urine might make it look like it's getting worse.
The other day I went to the pool, I opened my eyes too often in the pool and when I got home my eyes were red and scratchy but they did not burn. I put some urine drops (not diluted) and it burned like crazy. I am used to putting drops once in a while for maintenance purpose, but usually it never burns. After a while my eyes regained there natural color and sensation.