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 is a slow-progressing disease that causes damage to the eye's optic nerve and can result in blindness. Open angle glaucoma, the most common form of the disease, affects about 3 million Americans. It is the leading cause of blindness in the United States. Since there are usually no early symptoms, half of the people with this disease don't know they have it.