Arcs of oscillating jagged lines, round jumbled spots. Occur in both eyes - I close one eye, and the same thing is visible in the same location of the other eye. Lasts minutes to hours. Sometimes very close to center of vision, sometimes 20-30 degrees to the side. No particular headache associated with this. I rarely get headaches, have never been diagnosed with migraines. Had roto-rooter treatment in the sinuses several years ago, so sinus infections are no longer a real problem.

Any thoughts?????????

Classic migraine aura. You don't have to get the headache for it to be a migraine aura.

But I'm 65 years old. I thought migraines decrease in frequncy and intensity as one gets older. Why are these starting now?

Migraines are supposed to calm down with age. I've had them for over 40 years, don't get the headache very often anymore, but have auras more often. The appearance and frequency at your age probably has to do with the trigger. Something is causing the electrical discharge and arterial activity in the brain that didn't before.
In my case, there is a logical explanation for an increase in auras as I get older--they seem to be caused by my back/neck being out-of-whack. When my back or neck is bothering me, I'm more likely to get an aura.
Triggers are elusive, but you might want to keep track of what's going on (and in) before you have an attack.
Don't know if this device is available yet...it was in trials last I heard...and don't know what it's called, but there's a handheld, battery-operated wand that you wave around your head at the first sign of a migraine and the electro-magnetic field that it creates stops the abnormal electrical activity. It was invented at McMaster University, if you want to do a search.

Well, changes have been occurring. I had been a competitive runner (yes, even at age 65) for 25 years, but had to quit a few months ago because of back problems (lumbar). I still exercise (elliptical trainer and walking), but not at the intensity of running marathons. So my body possibly still hasn't adjusted to the changes, especially my cardiovascular system. I seem to have less of the aura problem when I get more exercise - spend more time on the trainer or go outside and walk further or faster.