In CVP analysis, the contribution margin is the dollar amount remaining after deducting variable expenses from sales revenue. The unit contribution margin is the amount that each unit of sold product contributes. In this example, the unit contribution margin is $50 (price of $100 minus variable cost of $50).
Vision Problems in the U.S. estimated the population with glaucoma to be 2.7 million in 2010. This number is estimated to be 2.86 million in 2014, and will increase by nearly 50% to 4.3 million by 2032 and by more than 90% to 5.5 million by 2050.
Glaucoma Prevalence Rates by State. The map above reflects estimated state-by-state prevalence rates of glaucoma. The overall national rate is 1.9% for the U.S. population age 40 and older, indicating that more than 2.7 million older Americans have primary open-angle glaucoma. Hover over the map and click on the desired state for the glaucoma prevalence rate in that state.