Table 1 Suggested PRO measurements for trials of medical presbyopia therapies

How many times have you been unable to do each of the following over the last 24/48 h

Read a book/newspaper

Read medicines instructions

Read menus, ingredients

Distinguish between shampoo and conditioner in shower

Were you prevented from doing something because of glasses/lenses?

Rubbing eyes

Cleaning make-up

Opening eyes under water

Actual physical effects of drops

Stinging

Patient acceptability

Cultural

Religious

Ethical (animal testing)