See here or here for background.
Nason Schooler is testing to what extent lipofuscin accumulation affects lifespan and using lasers to find out. IF lipofuscin is the key type of cellular junk that clogs up the clean-up and turnover machinery of the cell, and IF the laser treatment successfully removes lipofuscin, then one would think there should be an effect on lifespan.
Make your guess-timation as to how much longer (or shorter) the treated worms will live vs. controls. C. elegans lifespan is often quoted at 2 to 3 weeks. 14 to 21 days - so let us say 17.5 days. So for example, a 50% increase in lifespan would be an increase of 8.75 days, making the total lifespan 26.25 days.
For the purposes of this poll - let us guesstimate for the group of worms that are getting just 1 pulse of the laser. (there is a second group getting 3 pulses)