Eye floaters and flashing lights, can the lights cause you to have floaters?

Vitreous detachment: It sounds as if you have had a posterior vitreous detachment. This is a situation where the vitreous(jelly) of the eye detaches (not a retinal detachment), it then "crumples" up leaving dots, spots, strands of blurry vitreous; i.e. The "floater". You should have an exam to ensure the incident did not tear the retina, which could lead to a retinal detachment. Wait one year then consider surgery.

Occur together: The changes in the back of the eye which cause flashing lights also commonly cause a few floaters. Rarely these can be a sign of retinal detachment, so if they have just started get an ophthalmologist to look at your eyes to rule this serious problem out. The lights and floaters are simultaneous but not causative of each other.