> Should you ask the person trying to sell you a pair of expensive progressive lenses?
probably not, but should you ask the person trying to sell you an app with mediocre reviews of efficacy (the placebo effect should cause ratings to be higher than a "true" rating).
If new business models (including software) for vision therapy emerge, the revenue can fund marketing of existing studies or even new studies. The presence of this (marketing?) article in the NY Times at least raises awareness of the concept, so that people can consult the research or ask a professional about non-lens options.
probably not, but should you ask the person trying to sell you an app with mediocre reviews of efficacy (the placebo effect should cause ratings to be higher than a "true" rating).