Clear Vision Hawaii's lens configuration of 1.1
mm.-diameter holes x 2.5 mm. spacing is the optimum configuration for both
nearsighted and farsighted/presbyopic. Holes that are 1.2 mm. or larger do not
work for farsighted wearers, yet some pinhole glasses have holes as large as
1.5 mm. Websites selling pinhole glasses don't bother to list their product
specifications, so ordering from them is pot luck.
