Lately I've been using a different type of drop -- comes out as a gel/ointment.  Recently I've noticed matter in my eyes at different times of the day; I can feel it, but I can't rub it out.  I blink and it blurs my vision.  I blink again and it goes away.  I haven't been using the new drops consistently, but this new problem has arisen at about the same time that I started the new drops.  Could this be the cause?
							
						
					