The right lung has 3 lobes: Right upper lobe, middle and lower lobe. The left lung has 2 lobes: Left upper lobe (the lingula anatomically corresponds to the middle lobe on the right) and lower lobe.
How much money do optometrists make? According to recently released statistics the average salary payable to an optometrist is $118,000, while this is given as a nationwide average there are at least 50% of optometrists who are not achieving this salary level.
Salary range. Optometrists employed in the United States typically have salaries in the range from $68,098 to $137,069 a year according to Payscale. Self-employed optometrists generally earn between $75,000 and $168,000 a year.