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.
The prevalence of glaucoma increases with advancing age. Black Americans age 40 and older are at the highest risk of developing the disease compared with people of other races. By age 69, nearly six percent of black Americans have glaucoma; their risk rises to nearly 12 percent after age 80.