urinary tract infection
"First I noticed my computer screen got too bright and then I had to let less light into my room. After One Week being on Macrobid I really got worried as every thing I normally could see such as my 24' wall clock was blurry and I could not even see the numbers. I saw my eye doctor and it was determined after many tests, that Macrobid was really degrading my vision and it happened quite rapidly. 

It took about a good full two weeks before I felt my vision was returning close to normal. Yes, when your vision goes bad , one gets really shaken.If you notice that things start to get too bright after two days of being on this drug. See you Doctor and fast. I had a vision test two months later and I am happy to report all was once again well."