It is true that we would have eye floaters and something unknown flying here and there in front of us in daylight. It could be seen as a sign of health problems with your eyes, such as infections, cataract or some other serious problems, which needs thorough medical exam in the hospital. Just go and find out what led to them and take measures to fix it. Also you should protect your eyes in every aspect, such as your diet, or your sleep and use of your eyes.
If you just only see some spots or halos around the bright light, it is normal, especially when you tired. I also have such experiences. Usually, the spots around the eyes are caused by the staring into bright light. It is juts line a flash going off in front of your eyes. If this sport goes away in a short time. It is OK. If it this spots always here in front of your eyes, i suggest you to visit an ophthalmologist. Since you have no knowledge about it, you'd better not decided it by yourself from reading some introduction online. Just see a doctor and take the right treatment.
When you stay in bright light, you could see eye floaters in front of you. It is so bad for you. Your eyes may get infection because of invisible bacterium. You need to use the eye drops with anti-inflammation to get rid of the bacterium and make the eyes to be clear. You should have the good rest for the eyes, sitting in front of the computers for a long time with little rest.