1-Particles floating inside the eye may be harmless, or may indicate the new onset of a retinal tear or hole in the retina.
2-Vision may also be obstructed by particles passing through the bloodstream of the eye, and may suggest you have carotid artery plaques, a stroke risk.
Either should be checked by your eye doctor.
In any event, any new onset of floaters should first be evaluated by an ophthalmologist.
RICHARD P. MARGOLIES, MD