I ran into a problem during a documentary shoot last night with out main subject. She's a 90 year old woman who wears large (bug eye) glasses with built in bifocals. The key and fill lights were all over those glasses and there wasn't much we could do to debug the problem on set given the time constraint. We couldn't exactly ask a 90 year old woman to take off the glasses and do the interview completely blind and squinting. Even when the subject tilted her head down the bifocals would catch the lights.
I'd like to hear peoples' advice on how they handle interview subjects who wear glasses.
I already know about providing frames without glass and watching incident angles, but are there other techniques I could have used to quickly adapt? I tried having the subject angle her body more toward the camera, but that didn't work because she was still looking at the interviewer (duh!).
Thanks in advance.