Happens to me when my O2 is too low (speaking of pulse ox or SPO2). It gets below 90 and i get tunnel vision and/or bright floaters on the periphery of my vision. Here's a yahoo answer on it: http://answers.yahoo.com/question/index?qid=20100417222217AAC381l
If your O2 is OK then you may want to get it looked at...

Hugs,
Dennis

Hi Flash I don't use that particular Inhaler, the floaters ....I think I would mention this to the Doctor, some floaters are caused by a change in the amount of light that hits the retina -- the light-sensitive tissue in the back of the eye. This change causes the symptoms of eye floaters.

I have black floaters, some are caused as you age, since I had eye surgery and have glaucoma I have more black floaters, very annoying, but harmless. Some are caused by other problems, holding your breath just might raise the pressure in you eyes, if it happens often mention it to the Doc.

Sorry Nod.. that can be a bit frightening!

When we hold our breath it can trigger the vasovagal response sometimes.. esp. if we're a bit low on O2 like Denny said... as long as you didn't also have any associated chest pains ,etc. maybe sit down when your using the inhalers and take a couple of good breaths before using... sorry.. it is scary!

Thanks for the info guys.
Chest pains get those when i exert myself. Also notice when meds are wearing off. Do believe i was feeling a little tight and hurting before taking meds when it happened.