Flashes and Floaters
My usual talk about flashes and floaters goes something like this.
"The jelly in the back part of the eye is 99% water and 1% other stuff. The other stuff sometimes clumps together and starts floating around. You may see these clumps as floaters as they cast a shadow on the back of your eye. As the other stuff clumps together it can also tug on the retina. The eye and brain are not all that smart. Anything stimulating the back part of the eye will be seen as light. Pressing on the eye, having light enter your eye, or tugging from the inside are all interpreted by the brain as the same thing -- light. So we need to look at the retina to make sure the tugging has not caused a torn retina which could lead to a retinal detachment and subsequent loss of vision. "
Here is how an actor with a professional script explains it:
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