Overview. The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx). The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke.
About more than 50 percent of optometrists received an annual salary ranging from between $70,140 and $125,460. According to the Bureau of Labor Statistics, the median hourly wage for an optometrist is around $51.42 per hour which averages to about $106,960 per annum.
Salaries for Optometrists. According to the U.S. Bureau of Labor Statistics (BLS), the median salary of an optometrist in May 2014 was $113,010, with most making between $52,270 and $132,580 per year. Offices of other health practitioners employed the most optometrists, and these employers paid optometrists an average wage of $109,430.