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 continues to be a major public health problem. It is the second leading cause of blindness worldwide after cataracts. In the United States, primary open-angle glaucoma is the most common form of glaucoma and is the leading cause of irreversible blindness in African Americans. This disease is typically asymptomatic until advanced visual field loss occurs.