As we get older, we all need some effective and useful reading glasses. These glasses will help those having a hard time seeing close-up by getting rid of the blur and bringing things into sharp focus. Strengths are +1.00, +1.25, +1.50, +1.75, +2.00, +2.25, +2.50, +2.75, +3.00, and +3.25. They are assorted throughout the case and may or may not have equal numbers of each strength included.